We had very low volume, with price action indicating that buyers staid on the sidelines. The 30 yr went straight down from 8:00 to 9:55 (CT) and then closed shop for the day. <img src="http://www.elitetrader.com/vB/attachment.php?s=&postid=1056605"/>
Stocks dipped again after bonds closed -- another indication of a substitution effect taking place during the day between bonds and stocks in favor of the latter.
And when they stopped selling bonds to buy stocks. The buying dried up in the stock market and the futures pits took it down. That's what I'm seeing
Exactly, and the bonds-stocks substitution effect could explain part of the difference you detected between cash and futures.
I believe Bernanke made a comment around 2:30pm that the market misinterpreted his readying for a pause last week. Watch out, Lehman putting out high ball Fed Fund prints again their Economist out on the wires today saying 5.50% in Fed Funds and the exact same thing, that "market misinterpreted" his statement.