I know. It seems I contradict myself. However, there must be some way, besides instigating referred pain to an area where no problem exists, that the nervous system recognises its own vulnerabilities and reacts to protect. Otherwise the whole system becomes vulnerable and I can't visualise that this could ever happen. The weird thing is that pain doesn't register at point of nerve compression, so we have to assume the nerve has other means of warning / reacting in order to preserve its integrity and to instigate muscular reactions to this end. Thus the speculations on confused priorities of signals and their possible effect on the muscles.
Gerry