No forced selling of BTC, only forced selling of SD shares. Some people are theorizing that the large BTC payout led to the drop in exchange rate, but that doesn't make a lot of sense to me. The alternative view is that a BTC company was just sold for a significant sum showing that the BTC economy is thriving.
Small market. That is a huge amount.
People will be selling to make profits causing the charts to look negative. People panic and sell.
Imagine a 100,000 BTC sell on the market.
Total sell on BTC-E: 6560 BTC
Seems like the price drop is just beginning. I'd sell now, too, and then buy back at a new bottom.