This will likely end up being one of the most bizarre replay reversals this year.
The runner is correctly ruled short of the goal line (albeit shorter than it should have been). Replay reversed to touchdown.
He has the ball in his left arm and touches the pylon with this right hand. The ball becomes dead at the point and the foremost point of the ball is the dead ball spot.
That spot is clearly behind the hand that touches the pylon. It's impossible for the ball to have broken the plane at that point.
The Referee's announcement is equally bizarre. The ball never came close to touching the pylon.