If Bradford is done, I hate to be "that" guy, but I don't really give a shit who plays. Put the season to rest, develop some young guys, get a nice draft pick and have more talent next year for Bradford's return. There's not a QB out there that I would feel comfortable with to give us a decent chance to win, certainly not more so than Sam.
As much as I want another Kurt Warner story, what makes that story so great is how unlikely it is to happen. We're not going to strike gold twice with that, so lets just get a JAG to play behind Clemens (or in front) and get ready for next year. Don't give up on the season of course, keep trying, but use this time to develop the younger guys. Get Quick more involved, get Bailey more involved, experiment a little bit and see what we got.