I hated both calls but the 2nd call was correct, in retrospect. Yes, it was a fumble. Yes, it went in the end zone. At that point it is still simply a live ball in the field of play. The play will end when the ball goes out of the field of play, or is recovered. If it goes out of bounds in the end zone, it is a touch back. If it is recovered in the end zone, it is either a TD or a touch back. If it goes into the end zone and then back onto the field of play, it is still a live ball. It could have landed in the middle of the end zone, bounced back onto the field and then out of bounds and it still would be out of bounds to the team that last possessed it. It clearly hit the line, then bounced back behind the pylon and out of bounds...correct call. The ONLY thing that can be disputed is if it hit the pylon on the way out. If it did, touch back, SU ball at the 25.