I agree with Jody that you should be careful around contacting his family, this has backfired for me in the past because when all is done and said he is still their son even if they don't agree with his actions. It can also make the WAS's feel like they are being ganged up on and make them retreat more.
I would just say don't back your h into a corner. At this point you want to make him feel like he can approach you. Don't take you eyes of the cheese.