Paul Beakley​, you keep referring to being broken quite a lot, but at least in the Swedish rules it states that a social conflict is just one roll, not a contest repeated until someone’s broken. However, you may choose to have extra 6s (the special symbols) cause Stress (Agility, or rather “Cool”, damage), or Doubt (Empathy damage). If you succeed in manipulating someone, it states that the losing side most often relents and does what you want, but with a request for something back. It’s up to the manipulator to accept the deal or not.

Do the English rules differ in the Social Conflict rules? The Swedish rules also has a “Let it Ride” rule, which should further help against being broken by PvP social conflicts.