huge order after close

Did anyone see that huge order for 522K shares at $0.47 right after close? It's been pulled since, but it seems that whoever has been consistently selling over the last couple of weeks (or more, I can't remember) has at least another half a million shares to go. I wished someone came and bout it all so the SP can recover from this selling pressure it's been under

I wonder why they're so determined to get rid of it all. Anyone got any thoughts?