Bloggingtheboys had this to say about the lack of running game against GB. Take it for what it's worth.
http://www.bloggingtheboys.com/2009/11/15/1158839/drowning-in-a-vat-of-whey-packers#storyjump
Dallas called only eleven runs to its trio of backs in the game. The knee jerkers will likely point to last year's Washington game and accuse Jason Garrett of getting pass happy. I don't think that had anything to do with the loss. I've broken down Dallas' drives and find that penalties and sacks kept the offense off the rushing side of the play sheet:
First Half
* Series one -- two rushes, 20 yards;
* Series two -- three rushes, 8 yards;
* Series three -- one 1st down rush for 2 yards. Romo sacked on 2nd, taking the run option away on 3rd;
* Series four -- two rushes for 3 yards. Choice is two feet short on a 3rd-and-4 draw;
* Series five -- no rushes; Roy Williams fumbles on drive's only play;
* Series six -- Romo is sacked on 1st down, putting Dallas in 2nd and long. No rushes;
Second Half
* Series one - Barber rushes on 1st for no gain. Romo sacked on 2nd down;
* Series two -- Choice runs once for 11 yards; Williams and Witten bungle the drive on subsequent plays. (see above);
* Series three -- Felix Jones rushes on 1st down for 4 yards. Romo sacked on next play and fumbles;
* Series four -- Dallas takes the field here down 17-0 with 10:44 left and doesn't call another run.
Jimmy Johnson's halftime remarks on Fox were apt. Dallas could not get first downs, and when you're taking sacks and penalties and not converting, you have no chances to build a running rhythm. Dallas didn't get a first down on five consecutive series starting with its third. It had three rushes in the five italicized drives,while the game was in doubt. But where are the extra runs in that segment coming from? One series lasted one play, and it was a great call. Another lasted two plays. The most promising drive wasted two great pass calls.
The Packers front won the battles up front on run and pass downs, and I don't think we can fault Doug Free too much. The leaks were coming from the left and up the middle on linebacker blitzes.