Bernake is between a rock and a hard place. If real estate recovers (even though this means doing terrible manipulations), a lot of taxpayers will be happy. Also, this reduces the toxicity of a lot of toxic debt (even though it adds huge amounts of other debt to the deficit).
On the other hand, if he decides that the economy needs to swallow some bitter medicine and to cut away some of the infected areas, panic will ensue and everyone will blame him.
Of course, the longer we allow the infection to continue, the worse the situation will get and the more painful the treatment needed will become.
Keep on slapping bandages over the infection Ben. At least you can soak up some of the pus so that it looks like the patient is improving a little even while the rot works its way in deeper.