No, someone dumped like 40k coins... way beyond the 2k Casascius mentioned.
And in this case, I didn't dump the coins on the market, I pretty much removed the coins from the network - completely inaccessible until someone hand-types the private keys back into a computer.
That would have an upward pressure on the price, not downward, if anything.
Exactly. Not sure people got the idea that doing an internal transaction (from address Cascius controls to addresses on Cascius' coins) would cause a drop in exchange prices.