No I don't know that current seller is a thief and unless he admits to it or the police state he is I won't state that he is. That being said he is selling a numerous amount of bikes with dubious descriptions. So I would guess a thief or a fence, but I do not know.
I also live 20 some hours away so I cannot personally handle it. The police are handling it.
I have evidence: serial #, invoice, description, and I have sent the police the pictures listed on the ad and shown the various markings (how I know the bike is mine vs someone elses).
The police are currently working on it.
Maybe it will be resolved today.
MM