I wouldn't be surprised if Theymos sold a bunch of his btc stash before the 2x threat. I know at least one other prominent early adopter who completely cashed out.
Theymos might be hoping the price comes back down so he gives advice as such to make himself feel better. I don't know why he otherwise would feel compelled to advise people. Why does he care? This is free market. Let people live and learn.