"Upon release, the spaceship experienced a downward pitch rate that caused a stall of the tails. The crew followed procedure, selecting the feather mode to revert to a benign condition. The crew then de-feathered and had a nominal return to base," according to an updated flight log posted by Scaled Composites, builder of the WhiteKnightTwo/SpaceShipTwo launch system."
Space.com
http://www.space.com/13297-virgin-ga...ht-glitch.html