I dislocated my shoulder before, and my legs and spine didn't stop working.
I guess I must be some kind of God, like Julius Caesar or something.
Like I said there are different kinds of pain and shoulder dislocations yours must be different than the one I experienced because it is very painful to even attempt to stand up straight. I NEVER said there is anything wrong with your legs or spine, what I meant is that attempting to stand upright moves the shoulder when its not back in place which is extremely painful. You pretty much can't move the shoulder from its current position without extreme pain, and being bent over I personally found is the only way to keep it in its current position/minimizing the pain.
Yours must be different than mine, one of my teammates have shoulder dislocations too but I can tell his is different than mine since he can actually raise his arm right after getting it back in place while I still have difficulty the next day.