FOURTH AMENDING AGREEMENT IN RESPECT OF THE REMINGTON PARK LOAN AGREEMENT

Exhibit 4

FOURTH AMENDING AGREEMENT IN RESPECT OF THE

REMINGTON PARK LOAN AGREEMENT

THIS AGREEMENT made as of the 15 day of September, 2008,

BETWEEN:

REMINGTON PARK, INC.,

a corporation incorporated under the laws of
the State of Oklahoma

(hereinafter called the “Borrower”),

OF THE FIRST PART,

- and -

MID ISLANDI SF.,

a partnership formed under the laws of
Iceland, acting through its Zug branch

(hereinafter called the “Lender”),

OF THE SECOND PART,

- and -

GPRA THOROUGHBRED TRAINING
CENTER, INC.,

a corporation incorporated under the laws of
the State of Delaware

(hereinafter called the “Palm Xxxxxxx
Guarantor”),

OF THE THIRD PART,

- and -

GULFSTREAM PARK RACING
ASSOCIATION, INC.,

a corporation incorporated under the laws of
the State of Florida

(hereinafter called the “Gulfstream
Guarantor”),

OF THE FOURTH PART,

- and -

MAGNA ENTERTAINMENT CORP.,

a corporation incorporated under the laws of
the State of Delaware

(hereinafter called “MEC”, and together
with the Gulfstream Guarantor and the Palm
Xxxxxxx Guarantor, collectively, the
“Guarantors”, and each individually, a
“Guarantor”),

OF THE FIFTH PART.

WHEREAS the Lender, as lender, the Borrower, as borrower, and the Guarantors, as guarantors, are parties to a Remington Park Loan Agreement made as of July 22, 2005 in respect of the construction of the Remington Facilities (as defined therein) (such Remington Park Loan Agreement, as amended by a First Amending Agreement (the “First Amending Agreement”) in respect of the Remington Park Loan Agreement dated as of September 28, 2007, as amended by a Second Amending Agreement (the “Second Amending Agreement”) in respect of the Remington Park Loan Agreement made as of the 23^rd day of May, 2008, as amended by a Third Amending Agreement (the “Third Amending Agreement”) in respect of the Remington Park Loan Agreement made as of the 13^th day of August, 2008, and as the same may be amended, modified, renewed or replaced from time to time, being referred to herein the “Remington Park Loan Agreement”);

AND WHEREAS on September 11, 2007, MEC’s Board of Directors approved and adopted a plan (the “MEC Debt Elimination Plan”) (referenced in the First Amending Agreement as the “Borrower Restructuring Plan”) to restructure MEC and its subsidiaries (including the Borrower) and to revise the business plan of MEC and its subsidiaries (including the Borrower);

AND WHEREAS the MEC Debt Elimination Plan contemplated the sale of assets including, without limiting the generality of the foregoing, certain of those Properties owned by the Borrower that constitute collateral for the Loan;

AND WHEREAS the sale of assets under the MEC Debt Elimination Plan continues to take longer than originally contemplated and, although MEC continues to take steps to implement the MEC Debt Elimination Plan, it does not expect to execute the MEC Debt Elimination Plan on the originally contemplated time schedule, if at all;

AND WHEREAS on March 31, 2008, the Board of Directors of MI Developments Inc. (“MID”), an affiliate of MEC and the controlling shareholder of MEC, received a reorganization proposal on behalf of various shareholders of MID that would, among other things, alter the relationship between MID and MEC;

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AND WHEREAS on June 27, 2008, MID announced that, in light of shareholder discussions relating to potential amendments to the reorganization proposal, the special meeting of MID shareholders to consider the reorganization proposal, previously called for July 24, 2008, was being postponed;

AND WHEREAS discussions between MID and various of its shareholders relating to potential amendments to the reorganization proposal are ongoing, and, given that no consensus has been reached with respect to such amendments, MID intends to continue to explore a range of alternatives with respect to its investment in MEC;

AND WHEREAS on August 22, 2008, MID announced that it had retained GMP Securities L.P. as a financial advisor to MID management to liaise with shareholders in an attempt to develop a consensus on how best to reorganize MID;

AND WHEREAS pursuant to the Second Amending Agreement the parties to the Remington Park Loan Agreement amended the Remington Park Loan Agreement to revise certain representations and covenants relating to implementation of MEC Debt Elimination Plan and to extend from May 31, 2008 to August 31, 2008 the date prior to which the Lender shall not charge, and the Borrower shall not be obligated to pay, a Pre-Payment Make-Whole Amount in respect of any valid pre-payments made under the Remington Park Loan Agreement, all on the terms and conditions set out therein;

AND WHEREAS pursuant to the Third Amending Agreement the parties to the Remington Park Loan Agreement amended the Remington Park Loan Agreement to, inter alia, extend the Pre-Payment Make-Whole Amount Forgiveness Date, all on the terms and conditions set out therein;

AND WHEREAS the parties to the Remington Park Loan have agreed to further amend the Remington Park Loan Agreement to, inter alia, extend the Pre-Payment Make-Whole Amount Forgiveness Date, all on the terms and conditions set out herein;

AND WHEREAS all capitalized terms used herein and not defined herein shall have the respective meanings given to such terms in the Remington Park Loan Agreement;

NOW THEREFORE, in consideration of the mutual covenants and agreements set forth in this Agreement and the sum of Ten Dollars ($10.00) paid by each of the parties hereto to the other and for other good and valuable consideration (the receipt and sufficiency of which are hereby acknowledged), the parties hereto covenant and agree as follows:

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1. Definitions.  Unless otherwise defined herein, all capitalized terms used in this agreement (this “Agreement”) shall have the respective meanings ascribed to them in the Remington Park Loan Agreement.

2. Representations and Warranties.  The Borrower and the Guarantors jointly and severally represent and warrant to and in favour of the Lender, with the intent that the Lender shall be entitled to rely upon such representations and warranties in entering into this Agreement and notwithstanding the completion of the transactions contemplated herein, that: (i) all of the recitals to this Agreement are true and complete in all material respects; and (ii) there are no facts, conditions or circumstances that are known to the Borrower or any of the Guarantors and that may reasonably be considered relevant to the Lender’s decision to enter into this Agreement that have not been disclosed in writing to the Lender.

3. Amendments.  The Remington Park Loan Agreement is hereby amended by deleting the paragraph at the end of Section 3.4(a) of the Remington Park Loan Agreement, beginning with the words “ Notwithstanding the foregoing” and ending with the words “received the Reorganization Proposal Termination Notice.”, and replacing it with the following:

“Notwithstanding the foregoing, the Lender shall not charge, and the Borrower shall not be obligated to pay, a Pre-Payment Make-Whole Amount in respect of any valid pre-payments made under this Agreement on or prior to October 31, 2008 (or such later date or dates as may be determined in writing from time to time by the Lender in its sole discretion, with such later date or dates being subject to such conditions as may be determined by the Lender in its sole discretion) (the “Pre-Payment Make-Whole Amount Forgiveness Date”), provided that no Event of Default exists under this Agreement and/or under the Gulfstream Park Loan Agreement at the time of such pre-payment.”.

4. Opinions.  The Borrower shall, if requested by the Lender in writing, deliver to the Lender, as soon as reasonably practicable following such written request, an opinion of the Borrower’s Oklahoma Counsel and the Borrower’s and Guarantor’s Florida Agent, addressed to the Lender, the Lender’s Counsel, the Lender’s Oklahoma Agent and the Lender’s Florida Agent, in form, scope and substance satisfactory to the Lender and its counsel, acting reasonably, with respect to this Agreement and/or any of the Loan Documents.

5. Default.  Any default by the Borrower under this Agreement shall be deemed for all purposes to be an Event of Default under the Remington Park Loan Agreement.

6. Ratification and Confirmation of Amended Remington Park Loan Agreement.  The Remington Park Loan Agreement, as amended by this Agreement, is hereby ratified and confirmed in all respects and time shall remain of the essence. After the date hereof, all references in each Loan Document to the Remington Park Loan Agreement shall be deemed to be a reference to the Remington Park Loan Agreement as amended by this Agreement.

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7. Successors and Assigns.  This Agreement shall enure to the benefit of and shall be binding on and enforceable by the parties hereto and their respective successors and permitted assigns.

8. Governing Law.  This Agreement shall be governed by and construed in accordance with the laws of the State of Oklahoma and the federal laws of the United States of America applicable herein.

9. Time of the Essence.  Time shall be of the essence of this Agreement.  If anything herein is to be done on a day which is not a Business Day, the same shall be done on the next succeeding Business Day.  Where in this Agreement a number of days is prescribed, the number shall be computed by excluding the first day and including the last day.

10. Headings, Extended Meanings.  The headings in this Agreement are inserted for convenience of reference only and shall not constitute a part hereof and are not to be considered in the interpretation hereof.  In this Agreement, words importing the singular include the plural and vice versa; words importing the masculine gender include the feminine and vice versa; and words importing persons include firms or corporations and vice versa.

11. Counterparts.  This Agreement may be executed in counterparts and may be delivered by e-mail and/or facsimile transmission.

IN WITNESS WHEREOF, the parties hereto have executed this Agreement or have caused the same to be executed by their duly authorized representatives as of the date first above written.

		REMINGTON PARK, INC.
		by	“signed”
			Name:	Xxxxx X. Tohana
			Title:	Executive Vice-President
				and Chief Financial Officer
			“signed”
			Name:	Xxxxxxx X. Xxxx
			Title:	Secretary
		We have authority to bind the Corporation.

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	GPRA THOROUGHBRED
	TRAINING CENTER INC.
	by	“signed”
		Name:	Xxxxx X. Tohana
		Title:	Executive Vice-President
			and Chief Financial Officer
		“signed”
		Name:	Xxxxxxx X. Xxxx
		Title:	Secretary
	We have authority to bind the Corporation.
	GULFSTREAM PARK RACING
	ASSOCIATION, INC.
	by	“signed”
		Name:	Xxxxx X. Tohana
		Title:	Executive Vice-President
			and Chief Financial Officer
		“signed”
		Name:	Xxxxxxx X. Xxxx
		Title:	Secretary
	We have authority to bind the Corporation.
	MAGNA ENTERTAINMENT CORP.
	by	“signed”
		Name:	Xxxxx X. Tohana
		Title:	Executive Vice-President
			and Chief Financial Officer
		“signed”
		Name:	Xxxxxxx X. Xxxx
		Title:	Secretary
	We have authority to bind the Corporation.

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	MID ISLANDI SF.,
	ACTING THROUGH ITS ZUG
	BRANCH
	by	“signed”
		Name:	Xxxxxx Xxxxxxxxxxx
		Title:	Branch Manager
		“signed”
		Name:	Xxxxx Nideroest
		Title:	Branch Manager
	We have authority to bind the Partnership

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