It's the dapping up and smiling on the sideline for me. The moment it became clear that it was serious (and it was pretty damn clear pretty quickly), Stephens should have taken a knee and showed some respect.
This whole thing was just a bad look for the program.
These officials are terrible. Phantom call against USC and that previous Purdue play didn't end up counting because the ball was snapped after the clock hit 2:00.