Yes, they are using Woodbury in camp on ST - specifically KO returns. I have not seen too much of him, but he can catch the ball.
He looks OK at QB on drills, and if he can fill a valid role on ST and be a "disaster" QB, I say find a way to keep him. Why would having a special teamer as a disaster QB be a bad idea? Usually that spot is filled by a WR or punter, anyway.
He has a better chance of making the team than a WR with a number in the teens. Oh, wait, Roscoe wears #11.