Well the whole thing that irritates me about it is that they didn't even wait for him to finish school yet before making the ultimatum. It would be different if you have an 18-year-old living in the house not working, not going to school or doing anything with his life. But that's not the case here. Red's still got about one month to go before graduation, and they pull this "go to church or GTFO" stunt. Now they're telling his employer, not directly but through his sister, to change his hours so that he'll be able to attend church. To me it does sound like a power struggle. Otherwise, why the contract? I think it's just a way for them to rub his nose in the fact that they hold all the cards.
Christian apologetics is the art of rolling a dog turd in sugar and selling it as a donut.