A lot of good to take from the 2nd half. Aggressive D, No mistakes on O trying to "get the fumble back", Special teams were incredible, no quit in the face of adversity, the ability to forget the bad stuff, guys doing their assignments, Dever and Martin doing an outstanding job on AA DE's, awesome running game, and no drop with the substituting, tackling was substantially better ... I could go on.
Yes they made some mistakes, and didn't put PU away. It is still a new system on both sides of the ball, with plenty of new starters, and a lot of shuffling in and out. But the drive, enthusiasm, and will to win was there.
Calling the 2nd half "pathetic" is over the top, dramatic, and just poor form. Some people just can't look at the good in anything, and are never pleased. I'm guessing if we win a NC, and it's by 3.... some of you will be moaning and groaning about that.
Enjoy the win, and be supporters for a bit. Give the team the benefit, and boost them.
Just my opinion, your mileage may vary.