I have to be honest: I watched the game and thought it was 50/50 the "fault" of McNabbit and his receivers. If a defender takes away a slant, the receiver can't RUN A SLANT, and the QB has to adjust.
I thought that Car. did what it had to do: keep McNabbit from running and make him beat them with his arm, the way the Patsies made Manning defeat them with his legs. Neither was up to the task.