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.