Of course, we don't know if zaru is actually the rightful owner of the account. He could be trying to convince us (and Twitter support) in an attempt to take over the account...
Understandable remark cynix but I am definitely @yes. You can ask any of my friends and followers. I do believe they keep the history of your user account, my biggest concern is recovering my account now that the hacker removed all my person info from it.
I think and hope that twitter has a history of changes in the account. So that they can find the takeover.