Interesting. . . But the guy is a psycho. He acts and talks and looks, and probably smells like any other psycho drifter. Maybe he sprinkled Mormon dust on his piracy, but he's a pirate. Most Mormons I know don't act like that or support acting like that, and you didn't hear Mormon elders or whatever clamoring to his defense and pointing to their laws. Did you? I didn't.
Interesting counter-example: If he were a Moslem, we couldn't say any of that. Lots of Moslems live all middle class and suddenly act that way in the name of jihad. Surveys of their populations in the West keep showing 20 percent or more admitting openly that they support it--and pointing to the Koran to justify it.