It boils down to this. I pointed out BM's tell when he was playing mafia in past games, and how it looks like its going down that road again, so we need to keep an eye on him. He got spooked, and knee jerk voted for me not realizing that it was him just unprovoked digging himself a hole. It led to a number of rambling and self-contradictory posts in order to defend his genius and point out how he was doing nothing suspicious. He is arguing over semantics and not reality. The reason is that he can not do either of the two things he should have done in the first place.
A: Admit his plan was terrible as I pointed out, despite his continued defense of it.
B: Admit he did not follow his own plan.
While neither of those options may be enough to get him lynched, it sure as hell would cause someone to take a close look at him tonight or at the very least scrutinize him tomorrow. He must be worried that in either scenario he is unlikely to be cleared or be able to clear himself, hence the rambling and personal insults.
I hit Brett right in the feels.