Questioning himself. Three interceptions which are basically the same thing is going to create doubt. He's starting to wonder if a defensive player is just out of his eyeline ready to make a play.
In fairness was decent post Miami. He proved on that drive he can do it which makes me think it's more of a mental than physical issue at the moment. He hasn't even had a chance to go out and practice after the final interception against the Vikings so there's going to be some residue there which probably came to the fore in the early drives.