I'm seeing a lot of folks really pissed at the perception of McDermott throwing JA under the bus. I don't see it that way. McDermott has to be the leader of this team, part of that responsibility is giving accurate and honest feedback on what they did well and what they need to do better. It doesn't always have to be public / in the media, but I bet that many players were thinking the same thing. If McDermott doesn't address it I think it lessens his credibility with the team. When Allen made that weird lateral, there was a TE nearby and you could see the exasperation on his face, like WTF!
If Allen is going to be a leader as well, he needs to 1. be able to handle this kind of feedback (and probably acknowledge it himself) and 2. figure out a way to reduce the number of WTF plays.