Astra (Moomins) posted on the forums explaining that he was banned and saying goodbye. I can't find the thread now, it may have been deleted.
He and Johannes have been banned. We can't know why, but presumably because they share an ip. Its fairly clear they're different people. They have completely different personalities. There doesn't however seem to be anything we can do about it, as vouching for people doesn't seem to carry any weight.