(a) If any article or section of this collective bargaining agreement or any rider thereto should be held invalid, illegal or unenforceable by operation of law or by any tribunal of competent jurisdiction, or if compliance with or enforcement of any article or section should be restrained by such tribunal pending a final determination as to its validity or legality, the remainder of this agreement or any rider thereto, or the application of such article or section to persons or circumstances other than those to which it has been held invalid or as to which compliance with or enforcement of has been restrained, shall not be affected thereby.
(b) It is the further intent of the parties that should any article or section of this agreement be held invalid, illegal or unenforceable and inoperative, that section or article shall be renegotiated in an attempt to provide validity, legality and operativeness or acceptability to such section or article.