After all the BS whining about the entire market being propped up by Fed infusions?
This doesn't surprise me a bit.
Also, everyone had their models pegged to the unemployment rates, trying to predict Fed moves. Now that the Fed has decided unemployment is low enough not to be their primary target, everyone will be repositioning for their new metrics.
The taper is bad enough, lots of people think short term rates are going to be lifted off the floor.