Looks like even this account was hacked to scam (recently most of green trusted accounts are being hacked to pull scams) like BigJohn's case.Unfortunately if this is the case,nothing could be done ,even if the DT members give him negative trusts,the actual owner of the account would claim the account back by signed messages by stating the account was hacked.Only if that's the case .
He's going to come back and claim he was hacked... most hacks never happened. This guy always buys BTC for Skrill, talks same way, and if he wasn't the real owner the actual owner would make a thread.
The only way not to be scammed, and to avoid situations like this, is checking history of posts, activity and always asking to send signed message from some old address - the older, the better. Doesn't matter If account is with green trust or not, if is hacked that's the only way!
This scam was definitely very well prepared and we will never know the true.