Yeah the game is way too violent to go all out in an exhibition game. Not sure why they still bother playing this game really.
edit: Just found out Dallas hired Rod Marinelli as DL coach. I'm a pretty big fan of Marinelli as far as assistants go. LOLOL, Jerry is just waiting for Garrett to fail and he'll hire Gruden. A lot of current Dallas assistants have worked under Gruden. Jerry always does things a bit too late though. Why lame duck an average at best coach? Oh well, just more Jerry failing is all.