In the last moments of season 2, Clay takes a gray automatic rifle out of the hands of Tyler. In the opening minutes of this episode Clay is driving away from the school with it on his front seat, only now it's black.
The shots go from wide screen to classic whenever there are flashbacks. However when Tyler is seen in the screen with all bruises, it is a scene from flashback, yet the shot remains widescreen. This is a filming/editing mistake.