The price is being purposefully tanked. A thread was created with proof of this somebody clearly fears BC or is desperately trying to cause a crash (immediate sells after buys down into order book for the past 2 weeks, throttled price, sell walls 20% lower than the price several times in a row etc)
Whatever the goal is, the person is losing a great deal of money doing it. It would be in the tens of thousands by now.. could even be more. I'm not sure I believe someone would spend that much out of fear.
For all we know, it could be an extremely large, ruthless investor preparing to pump the coin hard. It fits the pattern perfectly anyway - in that scenario, the same person pushing the price down would be eating the panic on the other side of the book. Then at some point, the manipulation disappears, the person pumps the coin and laughs all the way to the bank with all the unnaturally cheap coins he picked up.
Not saying 'pump incoming!!' or anything like that, because you can never know about these things for sure. But it is definitely a possible explanation, and IMO, in the crypto-world it fits Occam's razor.