Just keep in mind that if Bernanke is forced out he will be replace by Summers.
I'm not sure about that. I expect Bernanke to be reconfirmed, since he will be Obama's sacrificial lamb to be thrown under the bus if things aren't significantly better by Nov 2012.
I think Summers has sufficiently embarrassed Obama in the last 10 months and will remain in a back room office.
Don't forget about Volcker and even Robert Rubin (who is carrying a lot of baggage from Citicorp)but is still loved on Wall Street.
This administration blows with the wind, so nothing would surprise me, JMHO.