APRC Deadlock. Should the APRC fail, following a total of one hundred and twenty (120) days for investigation and deliberation of the submitted grievance, to determine, through majority decision, the limited issue(s) before it, then and in that event, the parties shall stipulate the record before the APRC and present same to an arbitrator/mediator, selected by the parties or, failing agreement between the parties, by PERC for decision within the guidelines herein established. The arbitrator/mediator shall question the parties for purposes of clarification of the record, however, there will be no other further advocacy allowed. The mediator's/arbitrator's jurisdiction shall be limited to determination as to whether the record before him/her compels remand under the enabling provision; C., Faculty Tenure; Promotion; Non- Reappointment Grievances, 1.a. Grievance Process, supra.