The invalidity , illegality , or unenforceability of any provision in or obligation under this letter agreement in any jurisdiction shall not affect or impair the validity , legality , or enforceability of the remaining provisions or obligations under this letter agreement or of such provision or obligation in any other jurisdiction. If feasible , any such offending provision shall be deemed modified to be with in the limits of enforceability or validity ; provided that if the offending provision cannot be so modified , it shall be stricken and all other provisions of this letter agreement in all other respects shall remain valid and enforceable .