I do not believe that the Government will leave the mortgage market at the end of March either, because there will be no market.
I saw a clip with economists and other financial types predicting mortgage rates after the Fed leaves the market. Most said a 1% increase, but none of the 1 percenters saw the bubble. Chris Thornberg said at least 2%. I thing the one guy that saw the bubble has the most credibility. A 2% increase in mortgage rates will halt home sales, so the Fed will not leave the market.