Unfortunately, it's looking like your account has been permanently deleted. This happens more than a week after you get suspended, and you get two emails warning you. There's nothing we can recover now
You can signup for a new account, though.
Are you sure it's not controlled by you? I'm not seeing any records in BIND for it, anyways.
UPDATE
Looks like this is a serious issue. Yukito, I'm going to keep you updated on this thread.