If he walks away from the biggest pay day and looking like he bottled it into the bargain.

I'm sure he'd give at least some of a shit.

His gypsy boy front might tell you that he doesn't but he will.

I think the fight will still go ahead. As somebody has already pointed out Fury did this against Klitschko saying the ring was too spongy and John Fury walking around telling anybody in ear shot it was off.
That fight went ahead and so will this one.