Let's look at some of these "Lose and Go Home" games as you like to call them where Romo didn't "play well" (your term):
1. 2006 Playoff Loss to Seahawks - Romo fumbles snap on FG attempt. Cowboys claimed ball was doctored. Rewatch the 3 plays before the FG attempt and pay attention to the football. Ball is a dull brown color. On FG attempt, ball looks like it has a coat of varnish on it - it is very shiny. Ball on next 3 plays for Seahawks is again a dull brown (i.e. not shiny). In the offseason between 2006 and 2007, rules committee changes rule that home team furnishes all balls for game and allows visiting team to furnish its own balls for special teams plays. Just a random coincidence I'm sure.
2. 2007 Playoff Loss to Giants - Let's ignore the two perfect TD passes Romo threw in the final few minutes. Remember the ball bouncing off of Fasano's facemask when he was 2 yards deep in the endzone? I do but apparently, you don't. With 20 seconds left, remember Romo rolling right (after, as usual, avoiding 2 free rushers) and lofting a pass to Crayton just as Crayton blew past a stationary DB. Remember Crayton with a full 2 step lead (and widening) on the DB suddenly slowing down to look back at Romo just after Romo had released the ball. Remember the ball landing about 5 yards deep in the end zone while Crayton (who had tried to speed back up after nearly coming to a full stop) was just crossing the goal line. Without that slowdown by Crayton, that ball hits him full stride in the endzone - Now given motor-mouth's ability to drop wide open passes (remember the 3rd and 19 drop 22 yards down field from the shadow of our own goalposts) maybe he drops that one too. I remember those 2 passes, apparently you don't.
3. 2009 Playoff Loss to Vikings - Remember Ray Edwards going over, under, around and through Marc Columbo in the first quarter (and really, all game long). I'm not sure, but it seemed like he had about 15 sacks in the 1st quarter alone. An exaggeration of course but there was actually one play I remember where he went around Columbo so quickly he actually had to wait for Romo to complete his drop before he could reach him for the sack. Now, why Columbo was starting at RT after his replacement (Free) had played so well and solidified the OL after Columbo was injured is another subject entirely (remember how our running game came to life the 2nd half of the year while Free was in there). In my mind, this was the game that convinced me we needed to rebuild our OL if we had championship aspirations. We rebuilt in 2011, just not to NFL stasndards. I guess in your mind Romo was responsible for playing QB and RT (not to mention LT, LG, C and RG).
4. 2011 Loss to Giants - Remember Romo escaping the rush and lofting a lollypop guaranteed TD pass to a wide-open Austin who somehow "lost it in the lights" (his words). I remember that, apparently you don't.
Now I am not claiming Romo is perfect - far from it. He has made dumb decisions and mistakes that have made me mad enough to shoot him on the spot. But, on balance, in these "Lose and Go Home" games, Romo's teammates have let him down far more times than Romo has failed on his own hook.
Monte Sliger