Zero issue if they had a block call on. I understand the argument against it, but the best time to put one on is also when the other team thinks you'll be playing it safe. I also doubt that Cincinnati is going to give Turpin an opportunity to win the game there either. I'm sure they would have happily sacrificed 5-10 yards on the punt to kick it high or out of bounds.
The issue is a player who simply lacked fundamental awareness on special teams. If not for the touch after the block we are all taking about Fassel being a genius again.