This guy was a coward and madame Ellen did not like cowardice. She had to deal with him the way she knew how. That is why she opted to cruelly torture him and she did not hesitate to do it. It was degrading as she made the guy eat her shit and lick her asshole clean. He never saw it coming but he had no choice other than to stop his cowardice.
Mistress Wael likes being cruel to people who mess with her. She did not like what this guy had done and so she had to show him what the punishment for his crimes was. That is why the mistress chose to shit on him and she ensured that he ate her poop and drank her pee before she let him go. The guy never forgot what she did to him.