Almost no one is intentionally evil. Most people somehow or another justify whatever they are doing as right. I'd imagine most low level nazi party members thought they were making a hard decision to do what was right.
He did what he thought was right and luckily he got killed as opposed to surviving to make contact causing serious damage to the tribe.
He is the embodiment of evil to me, not because he wanted to be evil but because he was too stupid or intellectually dishonest to realize that what he thought was right was deeply damaging to other people. In this sense he puts himself in the company of most horrendous people in history.