Miniwaves completely driven by bank/lender pipeline management. By manipulating rate sheets and broker/lender perception banks/lenders can get people to float & lock pretty much at will with movements up or down. That's going to drive the refi waves.
Now for the rest of us on MBS Watch and in the MBS War Room who see what's going on their sly maneuvers won't work. But for the other 98% of the broker market it will.
I'm all for that long protracted low rate period Matt mentioned though. 