If you were scammed? Claim it back. Through you should have evidence that he scammed you + How long has it been back since you last talked to him? Since it would be awful if he just didnt had the time to come back online and you are trying to claim back his money.
Make sure you have some sort of proof that he took the account back. If he accuses you of scamming by taking the money back, then you could be in trouble.
Otherwise, I'd say go for it and get your money back!