"Geithner and Sumner therefore wouldn't have been my choice if I was really trying to make a difference"
Agreed. But to make Goldman Sachs (the maffia) disappear from the map, I think you first have to get the opposition to do so. That is a process, because you need the so far uninformed public to back that, because Republicans and Democrats are part and parcel of GS.
That's why I say he will have to let these guys go under in their own shit. Only then he can gradually remove GS and JPMorgan from the center of politics.