In the end, the Castle Breakers started a fight they couldn't win. It wasn't their fault for overestimating the friends the Omen of Misfortune could call upon. Perhaps the Castle Breakers knew that the Swordmaidens were liable to back up their pals, but they definitely didn't anticipate the Swordmaidens drag along the Flagrant Vandals in their rush to save their allies.
After being chased by a patient, Vandal fleet, suffering a torment of bombardment that riddled their sublight propulsion into wrecks, the elite pirates eventually saw reality and surrendered with what little grace they had left.
In the meantime, the lukewarm forces of the Red Tongs and the Caged had quietly let off the Omen of Misfortune. They returned their mechs to their carriers and slipped their fleet away to the nearest Lagrange point in rapid time, leaving no opportunity for the Vandals to catch up to them and teach them a lesson.