There was a gap in the chart. Prices didn't fall to $400. They levitated downward. Somebody put in a bunch of limit buy orders when there was low volume, waited until everybody was asleep and then pulled them. People saw them being pulled and adjusted there positions accordingly. People watching for a retest of $340 on China news sold and many put in leveraged short positions.

and suddenly this thread suddenly gets flooded with bullish stuff from new accounts.

They suckered in a bunch of shorts, and then put on the squeeze. Look at the one day chart. this rally looks like a mini-version of the rally to $710. Just because you're paranoid doesn't mean they're not out to get you.