One thing that often comes up in stories of interpersonal conflict is that people who try to embarrass their partners in front of family always seem to act like they're the victim when it backfires on them.
Whether their problem exists within the couple or concerns another family member, they always accuse the people they've wronged of humiliating them in front of their families. And either they apparently don't realize that they were right in the middle of trying to do it themselves or they wanted to keep a long-standing issue under wraps so they don't actually have to address it.
And as we'll see in a particularly strange case of this phenomenon, it often doesn't take outside observers long to see right through them and worry about how toxic a relationship with that person must be.