Sorry about the incomplete post--must have hit send too early.
When I saw this play in last year's Texas Tech vs TCU game, I thought the officials got it wrong based on 7-2-5. However, the replay casebook has the following play: #118 "First and goal on the B-5. A22 runs to B's goal line. loses the ball prior to it breaking the plane of the goal line, and the officials rule touchdown. The ball comes to rest in the end zone with no player attempting to recover it. RULING: Reviewable play, regarding whether A22 scored a touchdown before he lost the ball. Reverse to no score, A 2-Goal on the B-1. If the ball becomes dead in the end zone with no team possessing it, the ball is placed at the spot of the fumble. If the ball is dead in the field of play, the ball is placed at that spot (Rule 12-3-1 and 12-3-3-d)."
Neither of the Rule 12 references says anything about the issue of where the ball is declared dead,and 7-2-5 says it belongs to the fumbling team at the dead ball spot (which makes it a TD). So the ruling on the casebook play seems to me to be in contradiction with 7-2-5.