One potential obvious problem, would anyone buy Dom ACTUALLY going bad. I mean most of the audience probably would be guessing that he's playing an angle, and the characters I-universe who have known him for years, would be stupid not to realize that as well.
So either they're going to have to get creative writing-wise in order to make even semi-plausible that they'd be fooled by this, or they have to reveal that the others knew the whole time that it was a swerve (and were maybe even in on it the whole time)/.