Saban, or whoever it was that elected to go for the 2 point conversion on their last TD in regulation cost 'Bama the win and i have yet to hear/read anything that explains why they elected to go for 2 at that point. It made no sense in the moment and makes even less sense seeing how the game played out. Instead of a game tying FG, it would have been a game winning FG and prevented OT.
I think it's pretty justifiable. The first time they were up one in the fourth quarter of a low-scoring game. Makes a lot of sense to try to go up three.
The second time they went up four with under five minutes to go. Being up five is no different than four at that point so it makes sense to go for two.
Obviously in hind sight they would have loved to have kicked both times but I'd say both calls made sense at the time. When it's 14-9 at the end of the third no one is expecting the teams scoring three TDs and two FGs in the fourth.