From my POV, I see it as him asserting himself. Sure it's easy to hang up, but that could be interpreted as fear. As sexist as it may sound, sometimes in a case like this, he has to assert his roll as the male. Not caveman-like, but showing that he will not tolerate silly accusations.
Part of it comes from not caring any more. Then that's when the WAS feels the shift being no longer in their favor. So many cases here (men and women) once they decided to not be the victim, things started turning around.
At the very least it may get her to respect him more once she figures out that he's not playing.
M-43 W-40 2D - 9 and 5
Emotion, yet peace. Ignorance, yet knowledge. Passion, yet serenity. Chaos, yet harmony. Death, yet a new life.
