My guess is somebody or a group of somebodys decided to dump a large position at once. Coupled with the negative news and triggering of stop-losses, panic selling set in en masse.
It's on the OTC and MM were clearly trading with each other to take this down... also the RSI was pretty high and we need a pullback before the next REAL leg up...
No worries if your long just accumulate on all dips and you will be fine...