It wouldn't have even been a hail mary. At 40 yards out you can actually run routes. Sure they have to get to the endzone, and Auburn would have kept everything in front of them in one hell of a prevent look. I think going for 6, and playing OT was the safer of the options. Hell, the prior kick had been blocked and to kick it that far the trajectory was lower. The fact that the kid didn't have the leg... well... his coach has to know that. And, when he DIDN'T have the leg, and Auburn already knew it was a return more than a block attempt, Bama is playing down 2 players (Kicker and holder) with a host of offensive linemen who can't catch a speedster in any event. Auburn had 3 guys to block who might be able to make the tackle. They had 10 men to block those 3 guys.