I'm not convinced the game has passed Capers by in terms of Xs and Os. I do wonder if the Packers defensive staff (top to bottom including Capers) is gifted enough at getting the players to play the Xs and Os they are supposed to (communication errors/breakdowns/etc). It's obviously not a practice time issue as every team has to play by the same CBA rules (except the Seahawks apparently).
EDIT: In other words, the Packers need a defensive staff (top to bottom) that is as skilled as the offensive staff at getting their players ready for Sunday.