Well, you can't write Bale off just yet. I reckon with his Batman days gone, he needs something else to sink his teeth into so it's possible "he'll be back!". Not that he's desperate for the work of course, but it's certainly a good series to continue with in the right direction.
He's not one for backing away from projects at the first sign of trouble, so I hope 'Termaintor 5' will be a solid installment to bring him back.