I'm not taking up for him, because I have no use for him. BUT, he still has time to mature. He can either look back on that press conference and better himself, or not.
Coaches and Quarterbacks should only say "I" and take credit when things go south. Whenever the team wins, it should be about the team. When it doesn't, the Quarterback and the Head Coach are the ones who are supposed to have broad shoulders and accept the blame. ESPECIALLY when it really is theirs to own.
