ya know what i say to that guy
i say props for going back after so long and learning what you needed to learn.
there are many people throughout history that were great inventors or important people of history who couldnt read or write. it's not as if he shortchanged the students, he developed an alternative to a standard environment and when it required reading or writing he had teachers aids there.
i think its wrong he cheated, but i dont feel he necessarily cheated his students of their education. i also read he has a true passion for helping people learn and education ... more to be said than alot of teachers out there who do have doctorates or teach currently in schools. i can think of a couple of prime examples from my high school