Are you serious ?

Prior to the being hacked the account doesn't post in Russian once.
Immediately after the hack it starts posting mainly in Russian.
It has probably had more than one owner since.
I'm not saying you're wrong, I'm just saying the evidence isn't clear-cut enough for my liking.
Your suspicion is not wrong, PM message could be edit. But I don't think xtraelv edited it.
The notion that xtraelv doctored the PM never even crossed my mind. I certainly didn't mean to imply that.