There’s a funny story behind this.
All I did was use Auron’s Shooting Star, and he starts running in COMPLETELY THE WRONG DIRECTION. Right off Sin’s back. And he just kept running and running and running and running.
So I shared this with some friends on my personal dash, and they said they’d never seen anything like it.
I go back two minutes later, and he’s still running. So I had to start the battle over.