The way I think it would have gone had the TD not been scored is.
1. Running play to centre the ball if necessary, otherwise kneel down; takes the clock to about 19 seconds
2. Take a delay of game penalty, now just 9 seconds on the clock
3. Take the FG, if the snaps bad, throw it out of bounds, should still be 4 or five seconds on the clock to have another go. If it's good or not the Pats have to run the kick-off out of the end zone; and I love it when NFL players try to play rugby!