Perhaps you're being a little harsh on Jimmy? Happens all the time, sorry that not everyone can be as "super-fan" as the few people in this thread trashin' Jimmy right now.
It happens all the time, even myself, being a Colts fan, get pissed at the team a lot. Hell, 75% of Indianapolis was all saying "Fuck the Colts" in Week 14, and Archer knows how much I live for this team. Even lawmakers explored the possibility of issuing refunds to those fans...
I guess what I'm saying, is that if it happens to me [after a Mike Hart benching, or a loss to the Bolts in the playoffs], then I can't imagine the frustration a Cowboy fan [as well as you Lions, Bengals, and Raiders...etc fans] has after 13 years of being a Cowboys fan.
Let him have his win and be proud of it... The Cowboys played fantastic and deserve the credit.