I really don't see it either, that the Starr QB Sneak can be that high.
It's 3rd and 0,5-1 yd. If they miss, they can kick a field goal and go into OT.
GB had called their last time-out just before that third down play behind by three. With 16 seconds left and NO TIME OUTS, calling a QB sneak was very gutsy. If the sneak doesn't score, GB has no way to stop the clock. It will take several seconds to get all the players off the pile, re-spot the ball, and run your FG team onto the field and line up to try a FG to send the game into OT!
I don't know many NFL coaches that would make that call today. It was a do-or-die win-or-(likely)-lose call in the NFL CHAMPIONSHIP GAME!
I am not trying to diminish Ambush. But that wasn't a true win-or-lose call. It's only the first play of the second half. If the Saints don't recover the kick, they still have a chance to stop the Colts on D. And even if the Colts sore, they still have the rest of the half to try and win the game...sure...it's harder, but not impossible.