Would hiding in the basement while thousands of fellow Americans are dying a blunder?
No.
I don't know why you keep harping on this, though. If he didn't do anything when he was up for reelection, why would something change now that he's out?
He's down 3 touchdowns with a minute to go. The game hasn't been called, but he lost. He doesn't handle losing well, so he went to the locker room already to sulk. Time to move on.