I'm not convinced my friend. Even if you were speaking from an ideal treaty / contract situation, your position still held the fact that the violence would NOT invalidate the agreement and your argument also suggested that the other party had no power to do anything about it.
This position is similar to an abused spouse trying to leave a relationship and the abuser having power over them to prevent the separation.
EVERYONE has a veto and to suggest otherwise is coercive, violent and abusive. Your argument supported that no veto exists and for anybody who has been on the receiving end of a violent relationship, they most likely would have a visceral reaction to your statements. Your words have power and I suggest you think twice about how you use them.
To argue such a position is, in fact, in support of the abuser. So your comments are now incongruent.