Imho, his recent actions confirms that Ratimov never sold his account (as many suspected he did) as no sane person would pay for an account and then do what he is doing, spending God knows how many hours deleting 10k+ posts.
It depends on what we mean by the word sale. Another person wrote from the account. No one knows whether he sold it or gave it away or gave it to use. But another person wrote from the account. Perhaps there were several people behind the account and they had a conflict.