@bearfoil
If the THS was broken how do you explain no errors from its feedback control. If there is a mismatch between motor control to move it and its position then an error is generated. How do explain the abscense of errors? Also the a/c appeared to respond to the flight controls correctly (see the theoretical vs actual lines in charts in report #3). Also when the a/c nose down the attitude responded demonstrating elevator authority over THS.
One could argue that the SS was broken with a nose up bias. However the PF explicitly stated that he had be giving it stick back the whole time. Clearly this is more consistant with him thinking overspeed (nose up, deploy spoilers).