It's almost certainly someone pretending to be a sock-puppet of Garr's for a laugh.
Yes, it is.
Which victim complained giving you the right to comment on whether the account was someone else's sock-puppet? How much did that victim lose? Did you contact this sock-puppet and offer him the chance to pay back whatever he took before you looked at his IP address?
Just to cut off any speculation - that account was NOT mine. I've never used any account here other than this one - and I freely give permission for any checks admin want to do to check the truth of that statement.
I just want to make sure that sock-pupper was given the same benefit of the doubt as the Werner one was before Theymos checked its IP address and/or did whatever other checks he felt he needed to do to make the quoted statement.