If it is MMM driven then at some point the organisers will want to cash out, a huge dump/sell of coins across multiple exchanges would kill the price, however t

If it is MMM driven then at some point the organisers will want to cash out, a huge dump/sell of coins across multiple exchanges would kill the price, however they are unlikely to be able to sell all of their coins so it would hurt their remaining assets. A slow sell off would make more sense but given the illegal nature of the scheme they may not have a choice in the matter.