i honestly don't think he shorted XMR. but yes, he knowingly took advantage of his position to fuck the market. and now he's going around saying "see! i taught you a lesson not to trust anybody!" real fucking mature. how about you let Monero users/hodlers decide that for themselves and not blatantly screw people over. that move may have killed XMR, time will tell.
Doubt it. Many are selling now but it keeps at its support lines. This influenced time shortterm (few hours) but a stunt like does does not change TA.
I also think his stunt is hypocritical by the way, and I think he fucked over "monero enthusiasts" a lot more than the "pump & dump" crowd, because the pump& dump crowd is probably playing the market really well right now and making a ton out of these 25% price fluctuations.