well when most orders are below 1btc, with only a couple orders under 5btc.. it is pretty simple for someone with 200 btc to eat a nice slice of the order list and then let the sheeple panic do the rest of the snowball effect.

the easiest thing to do is to just ignore the exchanges as they are not true supply and demand indicators, they are just bot trading speculators who day trade.

use localbitcoins or bitcoin-otc as your true supply and demand indicators. try not to let someone with just 200 coins determine the market cap value of 13.5million