Maybe you're "falling off" with it because... ummm... you're done with colon cleansing? There's no greater downer than failing to notice when you're done with something and you keep doing it anyway.
Or maybe it's because the psyllium stuff isn't "for you"? You said that The Master Cleanser put you in a good place physically, spiritually, and emotionally. It sounds to me like that's the right program for you, then!