there is no plausible explanation. But I will give my best try:
The problem with the QB draw was execution. With 7 seconds on clock, had sufficient time to run the 52 yards for the TD. Allen did not execute. There was nothing wrong with the playcall.
I am sure we will hear : "The problem was execution, four times during training camp in July, I told the players they have to be read for the punt fake always. They are professionals. There is nothing more a coach can do"