Just when the spygate thing was about to fade away in people's minds, he reminded us again of how class-less he really is by cutting Underwood the night before the game.
People were making such a big deal out of Giants trash-talking during the week, as if it'd affect the game in any way, the whole notion is just asinine as Giants d-line is known for their trash talking during the game, that didn't stop them from winning at all.
But this move by Belichick will affect how Patriots would play, back in their minds they are saying to themselves that "So we are just tools you can just use and throw away huh." , even though they have enough motivation to play for themselves, losing the motivation to win the game for their own head coach will make a difference.
It also says that Belichick is VERY nervous about the game, it's almost as if he knows his team isn't good enough and resorting to his last bag of tricks.
Giants fans, we got this.