A wake up is what I call this. Sherman may not have owned up to mistakes, but if we could be in his head and read what is there, it would be " I, and everyone else who thought we were so special, well, we f.... up."
A wake up call is needed from time to time. You ride the bucking bronc and win for only so long, until it bucks you off and makes you look like a fool. Good for it. To pick yourself up, dust off, and make sure it doesn't happen again is the true measure of a man.
He may have said what he said, but I'll bet inside he knows the truth. I will also bet that this makes him hungry again, and that his head lowers just how much it is inflated.