Lady Shay was tired of the way her husband acted and she knew she had to do something that would send a message to him. He had never experienced her wrath before so he was unprepared for it. And when it finally came, he was unprepared. She dominated him, trampled and humiliated him like never before. He was in shock and in pain but he could do nothing about it.
Lady Shay knew these guys were straight. But they had messed up with her and she had to punish them. She had to make sure they learned their lesson and that they made amends for what they had done to her. She got them to such each other's cock and she sat back and laughed at how degraded as well as disgusted they were by the whole experience. It worked though.