EVANSTON – Controversial NU psychology professor J. Michael Bailey was under attack again today for his approval of a live sex demonstration at an after class event. Critics in and out of the psychology world say Bailey crossed an ethical line, one that should result in punishment for him and Northwestern University. “I was on a drug,” Bailey told Flipside investigators, “it’s called J. Michael Bailey. It’s not available because if you try it once, you’ll have an orgasm three