I read that the majority of humans have the muscular-skeletal potential to perform the splits that you see many gymnasts perform. The reason a living person with no flexibility training can not achieve the splits is because the person's central nervous system (CNS) automatically constricts the muscle fibers of the legs when the legs move beyond the person's normal range of motion. I read that this automatic CNS response is called the stretch reflex, and it is the CNS's way to protect the body from performing potentially dangerous movements.
So my question is: does this mean a body with a non-functioning CNS is very flexible? For example, if I could not perform splits while I was alive, could someone position my corpse into the splits before the event of rigor mortis?