I am currently holding a slightly more jaded view of what Jamie Dimon was doing. Rather than peeing his pants, I'm pretty sure he was just trying to bash the price of BTC down so he could get his traders in at some better prices so that they can manipulate the price better moving forward. It's just hard to crash the price of something when you can't overload naked short it. They are trying to find a way they can bring BTC under some measure of control.