I just wanted to point out that master-P's excuse that he couldn't send the coins does actually make sense. He is (most likely) using Armory 0.93.2 (it says it in the signed message that supposedly comes from him) which has a problem with High S values in signatures and any transaction that has a High S value is no longer standard so any of his transactions would not be relayed and would be rejected by many nodes and miners.

So if he is actually not scamming, then he may just be unable to send the coins back. Or if he is scamming, then he may be unable to move them (which would explain why we haven't seen any of the coins move yet).

If the account was sold or hacked and all of the info given away, then this issue wouldn't explain why the coins didn't move, unless the hacker also is using old Armory versions.