Purdue looked that night like a tired team, travelling for a midweek game to the middle of nowhere in central PA. They we're clutching and grabbing on defense consistently. I'm sure from hundreds of miles away Mackey was filled with boos, but Purdue was not moving their feet at all on defense that night, and the calls reflected that.
Then the refs failed to distinguish ball from arm, and instead of PSU shooting to make it a two possession game, they gave Purdue the ball with the chance to tie.