Your link is broken -- there's an ftp: hanging off the front. But I still went and read it, and the situation irritates me on so many levels.
The fact "taking up arms" is in the oath AT ALL is ridiculous. The deranged obsession with violence, and the bizarre paranoia that someone, somewhere is coming to get you and take away your freedoms aren't just the domains of wing-nuts. And it's utterly ludicrous to have codified a philosophy that asserts morality cannot exist without religion. It shouldn't take the Constitution (or the establishment of precedent via constitutional law) to figure that out in this day and age.
Then again, this is the US we're talking about. I never fail to be exasperated by its great potential -- and, often, equally great failure to be what it aspires to. Sometimes, I wish I held no affection for the US, because apathy would be a lot kinder to my blood pressure.
...
I think that rant's been building for a while. Probably time to cut off the espresso supply for the day.