I just saw the score. If the Bears give up 54, can the Cowboys hold them under 30?
I think that teams get up or down depending on circumstances and motivation. There is no telling how this game will go. The Cowboys don't appear to be very motivated most weeks. The play calling has sucked. Additionally, teams tend to get too conservative defensively with big leads and then try to "flip the switch back on" once the other team has pulled even, but that doesn't work very well because the other team then has momentum which is pretty hard to curb.
I have no idea who will win this game, but the Cowboys have had a pretty big monkey on their backs .... especially Romo. I wouldn't be surprised if we show up to play and actually notch the win this time around.