Someone's butt has a massive hole in it right now..

[NorrisK]

Not every dump is to cause the price to drop down further.

Could be an investor with preset sell limits which got reached, causing him to cash out.

Everything is always so dramatic over here..

[Swordsoffreedom]

My favorite comment so far on it is from the Wall Street Observer thread
Some dude spent the whole month targeting 420 then someone else pushed it down