Not trying to play devil's advocate, but
suppose this were the case: PlauZee genuinely believes bjoerni WOULD sit him and blind him out if he was disconnected and open sitting 5k/2k. Would he be crossing any ethical boundaries by doing the same?
I think that's the defense PlauZee is trying to use, albeit not explicitly. For somebody who's had an immaculate track record (AFAIK), this is the only way stealing bjoerni's chips becomes acceptable.
But tbh, I think greed got the better of him. I do not believe it for a second that he really thinks bjoerni would hunt his tables down to blind him out if he were disconnected.
$12,000 is a lot of money and he probably weighed the pros and cons of the situation: "Well, I have a good reputation. I'll use that as a crutch and say bjoerni totally deserves getting blinded out because of our history. I'm such a good guy, people KNOW I'd only blind someone out if I had a good reason. Even if they disagree, they can't fault me too too much. I can live with that. Worst case scenario, this slowly dies and everyone forgets about it. I can live with a cool free $12,000
"