If any rule or regulation promulgated by the Commission shall be determined by any court of competent jurisdiction to be invalid and unenforceable to any extent, the remainder of the rules and regulations, other than those which are determined invalid or unenforceable, shall not be affected thereby; and each provision of the rules and regulations shall be valid and shall be enforceable to the fullest extent permitted by law.
Okla. Admin. Code § 325:1-1-19