Casey seemed to play a little better against the Giants than he has all season. Is it a coincidence the whole defense looked good?

I didn't watch him every play and didn't go back and watch the game, but I did notice him controlling the point of attack on several plays. Could Casey be working his way back from injury? And is the improving D tied to an improving Casey?

I've blamed his decline on what's been happening negatively to this D. Now is his turnaround single handedly turning us around?

Everyone seems to think Troy is the key to Lebeau's D. I've always thought Casey was the biggest reason we won XL. Could he still be the key?