Who was the worst sportsman that endangered or let down others?

saw a question forum with an interesting question about the most dangerous sport man. seen the answers one expects like the drug cheat Ben Johnson, and marion Jones , gatlin and co. but the biggest on there supervised me. Greg Louganis the seoul olympic winner in the diving. just looked it up on line and see he had aids before the Seoul olympics and knew he was positive. yet he let that trainer poke around his head without gloves treating a cot that needed quite a few stitches. and the towel they put on the wound they left by the other divers and trainers. we know that HIV is transferred through blood. but i have seen where people have been charged with endangering the lives of others with knowing exposing others to HIV. why was Greg not charged and what happened with that trainer?