I know that the timing coincided well, but I don't buy that someone making a negative comment about Bitcoin has caused a 9% drop!
People speak out against Bitcoin almost every day, I think it is just chance that Jamie Whatshisface spoke out, then the price fell.
That's not to say that the price will recover, but it probably will.
Yeah there are two problems with this conspiracy theory.
1) If it was indeed caused by that guy it means that a lot of bitcoin holders trust this guy more than everything else.
So, it's quite a disturbing scenario.
2) If you really dig deep I don't think there is a single day when somebody hasn't called bitcoin a ponzi scheme in the papers. Probably on Christmas and Easter.
So I think is pure coincidence and if it is related it's more likely that his statement was caused by the first drop and not the other way around.