The moment he snuck the kids out of the house he screwed himself. Technically thats considered kidnapping... It is stupid cause it's his own kids, but the idiots that run this country seem to think they can dictate such things to us. At this point I don't know what would happen, but I would suggest getting the BEST lawyer you can find. I know they are expensive...should be a law against them charging so much but I digress....but it will be FAR more expensive in the long run if you don't have a lawyer willing to fight for you. They are a rare thing anymore as most lawyers are only out to line their pockets, but a few can still be found.
Good luck
Good luck