Violation of Continued Work Pledge. Any employee who violates the Continued Work Pledge of Section 5.0 shall be subject to discipline by the Employer, up to and including discharge. The Association acknowledges that discharge is the appropriate penalty for violation of Section 5.0. Any appeal to the grievance procedure concerning an employee disciplined for violation of Section 5.0 shall be limited solely to the question of whether the employee or employees did in fact engage in an activity prohibited by Section 5.0.