If any court determines that any provision of this Section 8 is invalid or unenforceable, the remainder of this Section 8 shall not thereby be affected and shall be given full effect, without regard to the invalid portion. In addition, if any court or arbitrator construes any portion of this Section 8 to be unenforceable because of the duration of such provision or the area covered thereby, such court shall have the power to reduce the duration or area of such provision and, in its reduced form, such provision shall then be enforceable and shall be enforced. This Section 8 , as so amended, shall be valid and binding as though any invalid or unenforceable provision had not been included herein.