As I understand the Fed's bloated balance sheet presents a problem only to the extend that a banking lending boom happens leading to a rapid growth in M2, as opposed to the informal target of 5% M2 growth(3% GDP growth plus 2% in inflation)
This is not happening currently, and it looks like it will take quite a while to get there as bank lending standards are currently stagnated at their lows and bank outstanding credit is collapsing(originations are not keeping up with debt paydowns). So the current level of Fed Senior Survey supply and demand is consistent with bank credit collapsing, its important to keep this in mind because it will take quite a bit of easing of standards just to keep bank credit flat
M2 is up 2% yoy(0.6% from 6mo, -0.9% 3mo)so there is still a buffer left in order to reach the 5%. Meanwhile actual inflation is low and dropping(only headline CPI is high, core CPI, PCE, median CPI, 16% TRIM CPI are all low and going down/flatish)
So the only scenario where the fed exits is when inflation expectations explode with actual inflation going down in the middle of a credit crunch with a fed that is quite willing to talk hawkish when people get worried, anything other than that Fed stays pat for a long time. How can guys like Greenlaw not see its pretty darn unlikely that will happen?