But with CHA 2 you should be able to successfully order others to stop Radmar.
Edit: on further review of the code, CHA 2 is otherwise useless for saving Breden. Either you or they have to have enough leadership cred to stop the angry mob (represented by high morale for you and a high leadership score for them) or you need to have them tied up to be dealt with when everyone’s cooled down a bit.
If you have the option to send some of the band away and remain at High Crag to delay the army, you can send Breden away as the leader of the fleeing folks, and thus avoid the whole unpleasantness…