SUCCESS! I have managed to deliver red damage to the spine without inflicting too bad of damage to the other organs or parts.
Test subject 1 (Domi heatedyawn) is a male human, who was struck with an iron bolt in the lower body, piercing the spleen, damaging the kidney and mangling the lower spine. After the expected bleeding and vomiting passed, the subject passed in and out of conciousness before finally managing to stay awake for several turns before passing out again. In this time he was not stunned nor was he bleeding. Thus, the only remaining symptoms of his injuries can be attributed to the spinal damage
In his entire waking period he was unable to stand, dispite dragging himself after me, still attempting to attack. After several misses it was determined that the subject was attempting to punch me, meaning that his arms still worked.
From this I can only conclude that red damage to the lower spine actually causes both legs to become useless resulting in a permenent grounded state!
More results to come If I can do the same with the upper spine.
Note: Extreme damage, at least to the lower spine is NOT fatal, at least in the short term. After long periods of waiting it was decided to put subject 1 down as humanely as possible. After two practice stabs this was carried out with a iron bolt through the skull.