The TAM aeroplane was a combination of factors. If the TR deploys inadvertently, the thrust-lever goes to idle and the aircraft is controllable. In that accident a tremendous force was used by the pilots to move the thrust-lever, to try and get more power. I was flying the -100 at the time, and this became a sim-check exercise. IIRC, it requires almost the force of a large boot behind it to move that lever.