My problem with Cassel has always been that he sucks, but he doesn't suck enough. If he Tavaris Jackson sucked, they'd replace him in a heartbeat, but he turns in a good play here and there, and even a good game here and there, which is just enough to make the Powers That Be think that he's got some juice. Then he turns in a mediocre game, then he turns in a game like today, and then people like us are calling for his head on a pike outside Arrowhead. But, alas, next week or the week after, he'll look good again, and management will say, "See?" and they'll try to stick with him. Again.
Same thing happened with Grbac. Same thing happened with Bono. Same thing is happening with Jason Campbell up in Oakland (when he's healthy). It's maddening.