I did a targeted exposure, it created a mess in their relationship and exposed the lies they were telling each other. I decided that enough was enough. Also I was fully ready to file for divorce when I did it, but I never used any foul language or spew. It made him realize in which mess he was and how ready I was to move on and fight for myself and my kids rights. It shook his fantasy land.
I think a lot of LBS are too scared of losing their WH or WW and keep playing nice without really detaching or installing boundaries. It just reinforces the WH/WW bad behavior. But that's only my personal opinion.
Me 52+ WH 57+ Married 20 + Piecing since 2016 (ready to give up...)