Sure, that's that's perfectly reasonable. I can't prove any of the other accounts were stolen but I can prove mine was.
Here's a screengrab of my Twitter connect feed which comes up with @Tab results:
http://i.imgur.com/MrdEp.png
I'm not sure how else I can prove I owned @Tab but I'll happliy provide any proof people suggest.
The cheeky guy even changed my name from '@tab' to '@tabisgone' and deactivated the account (I reactivated it)
Also, here is the @tab account:
https://twitter.com/Tab
You'll see it's brand new and the guy has a link to this site, plus he's got a picture of a guy wearing a bandana over his face. I had a illustration of myself because I'm a cartoonist (and sometimes use twitter to post new cartoons).