I saw that game, and I think the announcers missed it. When he scored in the back left part of the end zone, as his teammates came to join him, one of them kicked the ball that was rolling slowly in the end zone. It looked like it was intentional - I think it was an aTm player.
I also agree that if some guy starts strutting at the ten yard line, penalize him from the spot. If the ball goes to the 25 on plays like that, you can bet the coaches will make it very clear that stuff like that has to stop.
And I blame ESPN for glamorizing the end zone celebrations, just because I can.
I'm still pissed they called a penalty on Neal Colzie after he returned a pick inside the 10 at the 1975 Rose Bowl. It was a huge play, and he threw the ball down before celebrating with teammates. It wasn't a blatant, showy spike, but they called delay of game on him. Like the game was going to be delayed if it took 5 seconds to get the ball, when the teams had to change anyway due to the turnover.
The Buckeyes didn't get the TD, and lost the game 18-17, when a win would have resulted in an NC in the UPI poll, since Oklahoma was on probation.