A press release has been published, confirming the above. During the tail slide, a fault occurred in the r/h stabilator servo cylinder valve which caused the stabilators to move in opposite directions. This again caused the system to revert to mech backup. There was not enough time nor ability to regain control using the mech backup system only so the command was given to eject. Full report only available for interim use by the Air Force and the press release can not be linked to, so youŽll have to take my word for it, I guess.