I would not recommend it if you were in a weakened state. Often I think people need to be built up before they have mercury fillings removed, or have heavy metal detox. I think environmental toxins definitely add to the burden and add to effective immune response to the external environment. I think exercise is important. I would start with the most gentle exercise, whether it's Tai Chi, or a gentle stretch, exercise is really important.
Exercise is part of improving the structure.
It improves the nutrition to the joints, tissues and muscles. I have not found any yet that work since my FMS got me. My inhalers do not work anymore. Herbal, I have great success with Tumeric, but I'd suggest working with a person, either a doctor or herbalist, who knows what he or she is doing. Spinal surgery is rather invasive jump.