As for the this private deal, you either believe Elon or you don't. If you think Elon is lying, you would be crazy to hold this stock since Elon will go to jail. If Elon is telling the truth and Tesla goes private, you'll get close to 20% return by holding. Basically the shorts are betting Elon went all crazy and risked going to jail and completely ruining his reputation so he could juice the stock temporary for a day or two. For what? It's not like he's going to sell his shares.
Elon lying and Tesla going private isn't mutually exclusive. It could be at a lower number, it could even be higher. Musk could be forced out regardless, could stay.
BTW, there's apparently 900M in bonds due in February and another 1.3B a year later that Tesla can pay with stock if the share price is above 360, but if not they have to pay in cash they don't have. I don't know how that would work if Tesla goes private.