Bottom line some people should not be in Martial Arts at all it takes a big jerk and turns him into a HUGE JERK.. I've seen this numerous times. If your chief instructor will not help LEAVE. Sounds like that guy is a walking FELONY.. His time will come someone will always challenge a guy like that its not you trust me its HIM.. TRUTH hurts and most people don't wanna here the RAW truth that GUY has NO PLACE in MARTIAL Arts hes' an abuser with a GI and a BLACKBELT.