I laughed my ass off at this. Which is not what he was going for.
I think what happened was he did the move where a guy dives at his foot, misses (intentional or not) and he reverse spins over the guy for the go behind TD. Someone said, "dude, your a magician". Then he thought, "I know, I will dress up as a magician and use that as the lead in for the video of the move."
He went and tried on a tux thinking that is what a magician looks like. but failing to realize he looks more like the father of the bride. Not wanting to spend any money (even though the bag is secured), he did not actually rent the tux, he just tried it on and walked around outside the dressing room while being videoed.
That there is a guy in the background scrolling on his phone while AJ is busy not looking anything like a magician, was just an extra little treat for the lovers of high production values in the crowd.