He went down after making the catch and it hurt bad enough he fumbled the ball, which was picked up and ran back for a TD. Kind of like what happened with Revis.
It's official, they didn't bring Tebow in for anything but publicity and now it is going to backfire on them big time. Cut him or trade him. Let this team sink or swim with Sanchez and give Tebow a chance to go somewhere that will actually use him.