From memory (we're all electric now
) The cables run in pairs from the flight deck throttle pack under the floor outboard at an angle to pulleys somewhere above doors 1 L/R, then aft (through cutouts in the u/d floor beams) to roughly inline with the wing leading edge. There is then two change of direction (pulleys) outboard then down (next to the aircon risers) then, there is another change of direction to run along the wing leading edge to the pylons. They then change again to pass along the pylon and terminate in a mixing box that converts the rotary motion into a push-pull motion. From there on its 'teleflex' cable to the JFC.
Personally I think that the final positions of the T/L's resulted from the cables being snagged as the airframe folded on impact.
As for the engine. I would have expected to see more evidence of fan blade damage if it had been rotating (under power) on impact. The engine in the picture
may have been shutdown prior in which case it would have just been windmilling.