You know what hurts more than the relationship with Mannatech? The lie. So, if Carson wants to say Glyconutrients cure cancer, go for it! He already came out for the Egyptian grain pyramid thing. It fits the pattern. But to argue "no relationship"? It's simply stupid.
Actually, to assume a relationship more robust than exists is stupid. That’s your bag, so carry it as far as I’m concerned. It is inconsequential as a matter of basic trust, but you’ve got gnats to strain at out of self-interest. Go for it!