[Conservative til I die]

I don't recall there being anything in the rules that allows a Catholic to excommunicate himself ~ it takes an official action by someone in the priesthood authorized to do that.

That's only because of your ignorance of Catholicism. Those that engage in certain behavior automatically excommunicate themselves.

[muawiyah]

OK, so they do ~ let's see a cite ~ not disputing you, but when was it made "official", to wit: "Adolph Hitler is no longer a Catholic in good standing".

If he'd been Amish I'd ask the same question.