Wow, that's... troublesome. I mean, he's going to have to prove that:
1. The dance is somehow copyrighted.
2. He's the owner of the dance, and not the producers of the Prince of Bel Air show.
3. Epic copied enough of the dance to guarantee a copyright violation there.
4. Putting a reference in a game is grounds for a copyright violation.
How did he think this is going to work?
You know it deserves the GOTY.