It was bad, but they honestly owed Memphis one from earlier in the game. I think it was before Kiel got knocked out, and as he was getting tackled by a couple Memphis guys, the ball popped loose before he came anywhere near to touching the ground. The refs ruled him down, Memphis challenged, and they inexplicably said that there was not enough video evidence to overturn it.
Once again, one of the announcers said something along the lines of the replay officials not having all of the same angles as the ones that we get to see on TV. To this day, I fail to understand how that can be true