This misunderstanding could be a matter of symantics and language barriers.
I have a strong feeling the cure for HIV is the mutliple angles you've attacked it, like through diet, CS, and zapping (even if it was just a little). Sometimes there is no one cure but a lifestyle change that is required.
Plus I am of the school of mind and body healing. Your love and attention to getting him better might have tipped the scale. It is likely you are a natural healer. I know many people who have a chronic issues just suddenly one day realizes someone cares about them and suddenly a flood of white blood cells conquers the invader.
Finally, in some respect the disease is the cure. We just happen to not like the symptoms. Congrats though.