I followed this story too. It is sad, but I could find no details of just what therapy they were using and that is a very important issue. They make it sound like they were only using vegetarian diet and not any herbs or other therapies. Hind sight is always 20 20, but prehaps they should have taken him to Mexico.
At any rate, I bet the five years he did have were of a much better quality then they would have been if he had been on chemo and radiation all that time.