I have not read the entire series so I may be misnifored or speaking to other topics covered in the series, but I think many if not the majority of contracts are signed between parties with power asymmetry. One party write a standard contract in a way that mitigates their risk in order to provide a service and another party signs the contract to recieve the service with understanding that the benefits are worth the risk of dealing with an entity that has significantly more power then they do. I could argue the person was misniformed and mislead into signing an agreement with a relgious organization and should be free from the contract... but I could make the same argument for student loans, credit cards, mortgages, etc.

I can see value, and certainly abuse, in people agreeing to allow their religious organizations to arbitrate civil disputes... it would seem that people should be allowed to make the choice and suffer the consequences if the agreement is within the established law.