I have never heard of your theory but in my fathers case it could very well apply. He was a paratroopers in the Army 82nd Airborne when his parachute failed to launch. The parachute finally opened but had holes all in it so he was extremely lucky to be alive. Nevertheless, he had major back and neck problems the rest off his life which resulted in multiple surgeries. He too developed ALS in 2017 and passed in 2018.