Why not all? Just saying...Shula would have tried.
What makes you say that? I don't recall Shula turning over the bottom portion of his roster the way this regime has. If Ireland and Sparano won't give you a chance, then you have very little chance of making it in the NFL period. They just signed Larry Johnson and that was after taking a look at Clinton Portis and Tiki Barber.
Face it, none of the Bronco's QB's are really anything special and Tebow doesn't look as good as their 3rd string guy right now. If you made me choose between Tim Tebow and Pat White, I might take Tim. I might.