As I understand it, several camera angles were reviewed and everyone on the Panther sideline is yelling at Cam to go down because that would give Derek Anderson time to warm up, it is a typical tactic when the QB is hurt and aware of the situation, as Cam seemed to be, the problem is that since he did go down (on his own volition) then according to the letter of the law he should go back to the locker room. IMO, in this instance, the situation is not as egregious as it would seem to be.