If he doesn't believe its true, he shouldn't marry another in the future whether an annulment is granted or not. I recognize he has the right to rely on Church judgment, but if you don't agree with it, in this sort of case there is nothing to compel you to remarry. In my case, if my wife wanted to leave me, I'd fight it tooth and nail. If she wanted an annulment, you can guarantee I'd fight that. Maybe that's just me, but I know I'm validly married, and I can't accept anything that disagrees with that.
patent
SD