Should they fire him? No, that was the Redskins first division title in years.
Should they blame him for killing this season, possibly the next and hurting the franchise's future? Yes.
After seeing RG III limping around in that run play early in the 4th quarter, it was obvious that he was not the best option to win this game for the Skins. Shanahan should have benched him at that time the latest. Cousins didn't win a playoff game yet, nor did RG III, but Kirk showed to be capable of being a serviceable back-up, and throw passes, something that RG III in his pain didn't get done anymore.
Now, according to recent reports, he suffered at least a partially torn LCL and ACL. If it stays as that, he might be ready for the next season, more likely he'll miss a bunch of next season. Plus his carreer health is not getting better with multiple severe injuries like that.
Anyway, all the best for RG III, I really loved to see him play this season and hopefully he's back as soon as possible.as