Ron Garretson

Ron Garretson was a bloody mess after crashing his car and slightly before he got arrested for DUI -- but that doesn't mean he forgot his manners with cops. The veteran NBA referee had blood all over his hands Wednesday as a Lake Havasu City police officer responded to the scene of the car wreck.…

Ron Garretson -- a longtime NBA referee -- was arrested for DUI in Arizona on Wednesday after officials say he crashed into a tree near the Lake Havasu City Police Dept. Station. Cops responded to calls about a man who slammed an orange Jeep Wrangler into a tree around 6:30 PM -- and when officers…