I sent him a message on Youtube a few days ago and I haven't heard anything back from him. I just sent him and his wife both a message through their personal Facebook profiles a few minutes ago, but who knows when or if they will ever even notice the messages since Facebook doesn't put messages from people, who aren't on your friends list in the inbox. Neither of them seem to ever be very active on Facebook, either. It's just really odd that such valuable resources would just suddenly be removed like that. Especially after all of the time and work he put into his videos. The last video I watched of his on Youtube was maybe just 2 - 3 weeks ago. I don't want to speculate about someone's life on an open forum, but I can only think of 3 or 4 scenarios for what could have happened...