OP, do you have any evidence or you just want to share your paranoia,negative gut feeling and general pessimism?
I think this is 'normal' tradeaction especially because people mentioned about an hour earlier on the trollbox something like
a: "should we pump ppc? It's easy to pump"
b: "or pump bitcoin 10%"
so i would say it's all "normal"
I think we can expect BTC-e to slowly go back to its place in relation to the other exchanges (a few dollars below). Maybe this whole thing repeats later again because i think someone could have made profit with that action if he was smart. In case this was lucrative we'll see it again.