No jack, she didn't.
No threat of legal action. As far as we know, it could have been some imaginary leprechaun who advised her. As TS already pointed out in that thread - she can 'cease and desist' him as much as she wants - that doesn't mean shit.
Again, no legal threat. As far as we know, the coming shitstorm could be posting another OMG I DEMAND ADMIN ACTION OR ELSE I AM LEAVING FOREVER thread in QSF.
Of course, it's quite possible that one of these days, some admin or mod might get fed up with this bullshit enough to start daycaring people.... just saying...
ETA: btw, I disagree with Eggs on distinguishing between threatening a member or TK, but hey, that's just me.