The big I am
Apparently he was acting like such a diva on the set of ff8. The Rock even went as far as giving him a dressing down for being so unprofessional. This is what happens when you think you're the cats pyjamas because of one franchise keeping you in the public eye and giving you a decent paycheck. Outside of ff churns out wack movies like the last witch hinter and now this. He's almost 50 and is trying to convince his audience he's still some kind of adrenaline sports athlete.
He seems to forget it was The Rock's addition to the ff franchise that that gave it legs again. The return of the original cast in ff4 struggled to get things moving again. The Rock is a bigger star, has more charisma in his baby toe than the whole ff cast, and really should be the one who is the Diva as he had a career outside of ff. But he doesn't behave that way because he's a f@#king professional.
Basically Vin needs a reality check, without ff he would slip back into obscurity doing straight to video garbage just as he did after ff1 before begrudgingly coming back for ff4 when he realised his career was down the toilet.