not sure what i think about it now in terms of helping Shy Bowel. but then again i haven't tried it.
i do remember going for a colonic irrigation with a therapist some years back. at the end of the irrigation, she said, "ok there's probably a fair bit of water still in your colon, so you probably want to just empty yourself in the bathroom now". Sure enough there was still a load of water in my colon (felt like having watery diarrhea in my bowel and rectum). I tried to empty myself but of course the Shy Bowel wouldn't let me. So i had a painful trip back home, trying to evacuate it on the way in a public toilet with little success, (and of course the anxiety that i might have an accident away from a toilet - though in reality i think there was little chance of that as i was properly clamped shut).
... maybe this bad experience also was a factor in putting me off the cleanse thing - the fact that i might not be able to empty after having the colonic irrigation.