I don't disagree, and I've raised concerns with this approach ever since he started doing it about 6 or 7 years ago. The one thing I will say though, is that I feel that in a way, he thinks he IS giving himself the blame, as in "If I say they clearly weren't prepared for the game, and it is the coaches job (including me) to get them ready, then we obviously failed". If this is true, then what he needs to do is actually SAY that he is to blame, at least every now and then, to eliminate the impression that he is passing the buck.
This next stretch of games is critical. If the team right's the ship and gets 20+ wins and makes some playoff noise, this three game stretch will be viewed as just a hiccup (sort of like BC"s typical early season woes that lead to national titles). If the team starts playing .500 ball the rest of the way, then those calling for change will start making noise again (including me).