FlexibleResponse
Undetected, that would quite possibly result in a loss of control with a rapid roll-off, as the APLT exceeds its lateral authority and trips off, with no rudder input. As the APLT disconnects, the aileron applied by the APLT will neutralize rapidly, and the aircraft will have a very high roll rate away from the engine that is at high thrust. That is the same sort of scenario as the CI006 near loss in 1985 following #4 engine failure in the cruise at FL410, and the ensuing 30,000' dive leaving lots of bit behind.
That sadly has the ring of truth to it, and from IDN, there is a high likelihood that the DFDR readout has shown that, and it has been leaked to the public inadvertently. This is similar to the China Southern 3943 B733 loss. The potential for asymmetry due to a clutch pack fault was a system fault that was practiced back in the day.