He's not going to apologise and this is probably secretly what he wanted. Just look at what little it took for his words to have a drastic impact on bitcoins price. If it can fall by $100 or whatever just by someone saying its doomed (which was fud) then it makes me a little concerned for the future of btc What happens if a few prominent people say its dead? Are we going to see a fall by hundreds of dollars based on that? Someone saying something bad about bitcoin shouldn't have such an effect.
He is not just someone. After reading this blog he wanted to make a statement, which he clearly did.
Question is will something happen now?