(and before I move on, JDA has the most excellent photoshop of Bernanke ever... I'm going to respect her copyright and say clicky the link and go look... I'll wait.)
The 30 year bond then cratered, hitting its lowest level since Jan. '09:
I believe the reason the Dow tanked was not concern over what they did, but disappointment over what they did. The market was expecting more free money to try and make even more free money with. This may be the first time the Bernank did not deliver what they expected.
The spin and PR is flying already. They are doing everything they can to keep from crashing into the mountain below them, and are incapable of not messing with the economy. Fundamentally, I don't think they changed the picture at all. I still expect inflation followed by austerity measures everywhere; the march of the FSA and a prolonged period of bad history, "with a 25% chance of the Zombie apocalypse". Gold and silver? Might go on sale due to knee-jerk reactions, or acute needs for cash to cover market shorts. Prepare to buy on the dips.