RPGMemes

It's a typical sci-fi "pre-crime" morality puzzle. In this case we know that he would have killed those prisoners, if he had been given the opportunity. He probably was going to that PoW camp with the intent to do so, there wasn't any other reason for him to go there. But as it turns out he never had the opportunity, when he got there the camp was empty. So we're left consoling ourselves that "attempted mass murder" is probably still worthy of us killing him in the end.

The morality puzzle sort of got eclipsed even later in the campaign when it turned out this was merely a dry run for a bigger version. One of the "big bads" of the campaign was a 1500-year-old immortal naga who had ruled an evil empire that whole time (the Butcher of Bracken Ridge had been in her military). She was an immortal naga because 1500 years ago she'd used a powerful wish-granting artifact to turn herself into one, making herself completely unkillable. The way we ultimately defeated her was to travel 1500 years into the past to right before she made that wish and assassinate her then when she was still a mortal human.

Then my character took the artifact and made the wish instead, becoming the Serpent Queen. The rest of the party time-travelled back to the present, and my character took the "long way around" by living through history and making all the same choices the original Serpent Queen had made. Once she got back to the present and met back up with the rest of the party she rejoined them, bringing the resources of the entire Empire of Endless Flowers along at her command. It was the most efficient way we've ever defeated a boss monster - it turned out she'd been secretly a party member the whole time.

But disguise self played a much smaller role in that particular gambit.