That 10 million figure just goes to show how ludicrously tiny this whole thing is still. There's a bizarro disconnect between the amount of noise generated and what's actually occurring in terms of market happenings.
There are tens of thousands of people who could single handedly drive things through the floor or the roof.
Lucky for us supply is limited. So through the floor is just not possible. A single $-wealthy person can hold the floor at a level of at least $100 per coin against any number of $-wealthy people. You need Bitcoins to tank the market, and there aren't enough Bitcoins in sellers hands to move it beyond there as long as there is one person holding the line (buying).