Sure, I’d shoot a large dangerous animal that attacked me in the woods. But I wouldn’t go out to hunt it down.
Why not? Because your personal morality and your personal ethics -- which you may or may not have actually carefully considered -- create that preference within you. But I will also say that unless you can point to a natural reason or positive law forbidding Palmer from engaging in what looks from his perspective to be a bad but nonetheless ethical hunt, you have no basis to claim that the same arbitrary and probably unfounded moral judgment should apply to him as well.