When Terminus translate back to warp speed, the Admiral turned them away from the Kepler borders and further into the Empire, where they would have a higher probability of coming across a military patrol, and not the revenge of whoever sent the bounty hunters after them.
They didn't even know which of them was being accused of War Crimes yet, though it might just be the entire Command Staff on the ship, depending on how the determination was made and who made it.
Certainly, there were a few scholarly sorts who would argue that the Disruptor and the Fusion Flamer were both impermissible as weapons of war, no matter how effective they were.
[No pursuing vessels detected, clearing the border areas now.] The Admiral reported to the ship a few hours later, letting them breathe a sigh of relief.