My understanding of KF's decision-making is that he plays the long established percentages, that's why I cannot understand why he went for 2 on the first score. There's really nothing to think about, you need at least two touchdown scores to tie or win the game, so once you score the first TD, you have to kick the extra point in order to keep the 1 possession TD (with 2 point conversion) in play.
The percentage of successfully kicking the extra point are roughly 98%, the percentage of the 2 point conversion cannot be much better than 50%, in fact, it may even be below 50%. So, if you're the historical percentage guy, you kick the point after the first TD and live to play for the onside kick recovery and a one possession game.
But when I factor in KF's historical game management decisions, I can explain why he did it, i.e. it was just another poor game management decision. I hope he wrote a note to himself in his little notebook, that will help him remember what to do in the event this same scenario occurs in the future. (sigh)
The percentages aren't with kicking the PAT. You increase your odds of winning by going for 2 there.