These mistresses had gone to this guy in good faith and they wanted his help. But he did not give them the help they wanted. Instead, he chose to lie to them and they were pissed off as he had lied to them. The mistresses chose to punish him by forcing him to lie down and endure the pain of their trampling. They did it all together at the same time to make it even more painful.
Mistress Nikki and her friend mistress Zazzie did not like what their trainer was doing. He was not concentrating on them but was concentrating on things that they felt were not important to their competition. So they had to make him regain his focus and they did so by trampling him and doing it to him while he was naked. They did it on all of his body and made it painful.