It’s plausible, but doesn’t explain why the trim was all the way to the left. Sometimes the most obvious answer is staring you in the face.
Once the diagram is available, you’ll likely see that both cables are required to turn the jack-screw and will be able to discount that happening afterwards. It must require two cables as Conned has suggested, as otherwise if a cable broke in flight and you were turning the trim, you wouldn’t be able to turn it back again.