1) User John holds 1 million of Coin A.
2) John takes 100,000 (10%) and places them into an account for trading.
3) John sets up sell orders in stacks of 1,000 at ascending prices up to his dump target price.
4) John uses a second account/identity to begin placing buy orders for his own coins
5) The market sees "someone" buying John's coins at inflated prices and begins to make their own buy orders.
6) John stops placing buy orders until the "rush" dies off and then begins to buy his own coins again.
7) Repeat steps 5 & 6 until you reach your dump target price and volume
8) Dump all your coins on the market, collapsing the economy
9) ???
10) Profit!!!