It is inexcusable and Coach Kill would probably agree with that tweet. Remember in HS, when the coaches would call for the punt unit or something like that, and some kid would be day dreaming and not be ready, I don't think there is a way to tick a coach off more than that scenario. It is completely inexcusable and that's on the coaching staff.
That said, I wouldn't expect it on a regular basis. We are extremely young, we play a lot of different coverage packages, and we have a lot of injuries. there probably isn't a more of a recipe for these kinds of boneheaded mistakes. I'm not making an excuse for what happened, because it is inexcusable.