On a Subaru the cast part of the hub (knuckle) will bend long before the rotating part (the spindle) In fact, I have seen numerous bent knuckles but never have seen one that wobbles when rotated. If you still are not convinced, mark the high spot on the disc rotor, remove it and refit it half a turn on the spindle and reckeck it. I'll bet the high spot is in the same position.