Maybe Tebow was trying out at fullback or tight end ? Seriously.
When he was with the cheatriots I remember him saying that he was willing to play positions other than QB.
I did hear that Tebow has been working with a QB coach and has supposedly completely changed his throwing motion. Heard that just a few days back. I find that very hard to believe, but that's what I heard on a local FL (gator loving) radio show.
He left philly without a contract though, so I'm guessing whatever he showed might not have been very impressive.