He didn't muff it, but he was most definitely being careless with the ball. Look at the replay again. He was holding the ball out away from his body. In fact, he even waved his arm up with the ball when he was trying to slow down and make the cut. That's definitely from not being used to live action, but it was killing me tonight, especially after the dropped TD pass.
He looked skittish, out of shape and unused to live action tonight.
I hope he can shake off the rust before next week.