If, as I understood, Nefario disrespected the company rules, and therefore its owners, when he closed down GLBSE, it doesn't make sense to attribute such closure to GLBSE (= its owners), since, for all the matters, Nefario was no longer acting within his role of CEO. He was "attacking" GLBSE.

So, it doesn't seem to make sense to me to give the other owners a scammer tag. Actually, I still don't think Nefario should have gotten it, since he was likely the victim of a threat, but that's yet another topic.