In addition to the news that CoinLab is gonna manage USA/CA funds from Mtgox, they are announcing a professional, safe and licensed trading platform for US Corporations.
Trading platform = shorting.
3 or 4 medium sized corporations with 3 or 4 multimillion shorts puts the prices in $10 or below in no time.
This is possible when you can create commodities out of thin air (like "paper silver").
With bitcoins this is not possible.
So what? Physical silver prices and paper silver prices routinely diverge. If they aren't actually receiving BTC (like in the paper silver market), they can short and long prices in whatever direction they want.
They might even receive some sort of credit to BTC (without having to actually take possession), but coinlab or the TPTB could be just be employing fractional banking. At least with BTC some red flags will get raised when the total value of contract on the trading plaform go up over
BTC1M
I'm sure most of the bulls around here will still be happy with artificially driving the price down in the near term. And the conspiracy theorists will surely have a field day!