Here's some thought on the matter. First things first, if you are unsure what to do, covering a friend's back is always a good thing to do.
in reply to Node 541
I'm was about to use a phrase that I hopened never to hear here, which started with "IANA...". I wonder, if by editing for content, we make ourselves responsible for content, when before the content was "owned" by the poster (a previous discussion that came up about chatterbox logs).
I have to agree with mirod when he says "Auto-censorship is even worse than censorship, it means that the MPAA has succeed in scaring us and that effectively they are the law." This is completely true. That doesn't make what they do less scary. I don't know if I would recommend the monastery to take a stance on it, because of how scary they can be. But that's "take a stance" in either direction, to allow the scare tactics to work by removing it, or to promote the discussion.
All in all, from my non-existant knowledge of law, I woudl say that leave the original post as the responsibility of the original poster. Regardless of the fact is was an AM, by controlling the content we admit that we are responsible for controlling the content, and therefore open ourselves up to problem due to other's posts.
...you might be eaten by a grue...