Other mistake: When Downtown is in the manager's office receiving his punishment (being benched), as he leaves he slams the door on the cinderblock wall. If you look closely, you can see the cinderblock wall sway. (00:26:34)
Other mistake: When Bobby recovers the onside kick, he recovered it on the 43-yard line, which is where the ball is spotted (the scoreboard even shows this). However, there was an unsportsmanlike conduct penalty with the late tackle (and a flag was thrown so we know the ref didn't miss the penalty) so the ball should have been spotted on the 28-yard line. (And there's no question there were no off-setting penalties).