Haha, as if someone can explain the whimsical fancies of humanity. Economics tries hard and the theory works to an extent - but when working with humanity somethings are just completely illogical. I'd say the fall is just fear cramping demand from people simply out there speculating on the price (plus people's expectation that negative news will drop the price so they sell out and hence drop the price - ie self fulfilling prophecy). There is going to be a crapload more volatility before we see anything closely resembling stability.