We've tried to run it pretty much every year for the last dozen at least after Q graduated, but it just hasn't worked very well. I think the big line splits helped with it, since it was almost always run between the tackles. I also think Heupel was better at deceiving linebackers with his eyes, to get them out of the running lanes than anybody since. It is likely true that Griffin's short stature made it a more effective play. He really could hide from the linebacker likely assigned to him.
But most of it is that we were the only top 20 team running the spread in the years he was successfully carrying on the shovel pass, or shuffle pass or Utah pass, though I don't think it was exactly the Utah pass, specifically.
The Utah pass involved a set back moving toward the LOS to catch a forward flip while running forward. The play we ran to Q, he went to two yards behind the LOS and turned around. It was like a middle screen without a deep drop.
For the OP, we did run the play in the spring game, so maybe you'll see it. But my guess is that that showed it just to make other teams prepare for it. It might help slow down a pass rush if they're aware that we might run it.