I suspect that Wardrick's account was compromised around May, though I'm not 100% sure. But I'm not hearing any evidence one way or another from anyone who previously owned the account, so I suppose the account will be locked for some time. Therefore, I removed Wardrick's recent sent trust ratings. He can rewrite them later if his account is ever restored.
Did you happen to keep a record of these ratings? They might be useful in determining who stole his account. I wouldn't be surprised if they left positive trust for themselves and/or negative trust for their enemies. I can't see why else someone would hack a DT account and keep it secret for so long, they knew any trust they left would be worthless if it came to light that the account had been hacked.
Perhaps Wardrick hasn't come forward because he sold the account, I'm sure it would've been worth a fair amount.