What an exciting game! Thanks to the OP for the highlight reel as I wasn't able to watch last night.
I really think that the comeback was partly fueled by the fact that PSU had a large crowd that was very much into the game. In the past, their oversized arena was more like a morgue, with small apathetic crowds that seemed like they waiting for Spring Football to begin. Our team has often played well against large, loud crowds, like those at Purdue, IU, and Wisconsin. They did so again last night.