Therapists rejecting the artificial neutrality of therapy and taking a stand based on who is right and who is wrong sounds like a good thing many people.

The problem is, it's extremely difficult for a therapist to understand even one person deeply. Marriages aren't twice as hard to understand--they are exponentially harder, and never more than when the relationships seem obvious.

Even the parties involved, who are in it all day, every day, rarely understand what's really going on, which is exactly why they are talking to a therapist. The therapist, who occupies a parent-like authority position in the room, is inevitably played-to in complex ways by the subjects, who are usually themselves unaware of the dynamics of the triangulation. Therapists are human too--they cannot be assumed to be fully aware of how they are being flattered, subverted, or manipulated.

What person with any humility at all could consider themselves so wise and incorruptible that they can judge the right and wrong between people in this kind of situation? The choice to side with one party or the other will almost always say more about the therapist than about the marriage.