Looks like sell walls on bittrex and cryptsy to keep the price down.
Been watching it all morning and the same guy it seems put up a 7btc wall originally then started spreading the coins out to manipulate the market.
He quickly buys up sells from people under his amounts to accumulate more for himself.
This is a good sign.
Also notice not many 50 sells recently, or even numbered sells which is what was given away at cryptsy.
These were big sales in chunks that triggered this downtrend. No one coulda gotten that many in the giveaway.