Some lenders are repricing for the worse possibly a preemptive move against bad news for Bond Insurers hitting the news currently. Whatever the case, bonds are holding steady, to slightly improved.
5.0% = +12/32
5.5% = +8/32
(as always, these are total improvements on the day)
So I would expect for lenders that have repriced to come back into the market by the end of the day, unless MBS's drop off.