Well, I do not know the answer but have spotted immediately several compliance issues in the storyline (absence of consensuality in multiple cases, blackmail):
1) The wife hired a porn star as babysitter without the consent of the husband.
2) One evening, the husband needed some me time at home. To be able to neglect his kids with a good conscience, he called the babysitter. Later that evening, it came to pass that the husband's penis went into a throbbing state due to the babysitter's skimpy outfit and, you guessed it right, without the expressed consent of the husband.
3) After the husband's pants came off, this time more likely with the consent of the husband, the husband noticed that his wife might not consent with him getting deepthroated by the babysitter, so he thought about it for a while and finally withdrew his consent from the action taken by the babysitter.
4) From then on, it's all downhill for the husband. Ever since his one-time mistake, the husband is forced into providing sexual favors to the babysitter whenever she g*ddamn pleases by being threatened by said babysitter that she would inform the wife about the husband's escapades if he won't comply. On the one hand, the husband thinks that things really could be worse since the babysitter is one hell of a fuck. But the telling-his-wife part? Definitely not okay!
As you can see, one supposedly harmless non-consensual action (the wife hiring a baysitter without letting the husband have his say) may lead into a downward spiral ending up in criminal action and the husband's life being ruined. More than enough reason to pull the scene.