Kerbal Space Program

When a vessel launched from the VAB has parts from the Breaking Ground expansion, I find that attempting to re-orientate the craft becomes impossible while SAS is enabled, as it forces the ship to point towards the pro-grade direction, but ONLY when SAS is enabled. When disabled, the game receives "phantom" inputs. I use the term "phantom", as there is no real input causing these movements. The pitch and yaw alternating between the two directions simultaneously, and constant hard left roll. This makes it impossible to fly crafts with robotic parts attached properly.
--Steps to recreate--
Add a hinge, a piston and a rotor servo to a rocket
Launch the vessel
Achieve an orbit
Increase time warp to x10 and decrease it back to x1
Disable Stability Assist