He could have been the starter, that's what he could have been used as. He's probably a better runner than RL, and has at least as much 'arm talent', he just wasn't all the way there yet. He had what, like three total starts? It's water under the bridge now, and presumably the only reason he wasn't welcomed back at QB is because he bolted on the team, at the most important leadership position, and the program had to move on. That's what I figured, not because the idea of him playing QB again was a nonstarter solely on the athletic merits.
But I suppose it is over for him, as he'd at least have to practice with the QBs if he were to have any chance at transferring to a smaller program. And now he's playing WR and waiting on some special package to see the field.