I kind of hate to bring this up, but given that jav gets to keep all the coins that go unclaimed.... well, I'd call that pretty big incentive to shut it down.
I seriously don't see the point of this post. Do you believe that that's why he is shutting down? If he feels that he doesn't have time to run it there is really nothing else to do than what he did. Everyone can get their funds back, he will handle requests manually after the site has been shut down. He also told people to get in touch if they wanted to acquire it.