You're still an idiot.
What dump? That's just normal trading. There are relatively very few coins for sale.
Thats why they DDoS liquid exchanges with good coins like bter and vircurex. They only want the illiquid scam exchange cryptsy to show up on the coinchoose.com

Strike three. Congratulations, you hit the idiot trifecta.
PXC is not on bter or vircurex. Therefore, DDOSing those exchanges would have absolutely NO effect on the price of PXC.