Earlier quoted context omitted.
Yeah it's working now, very weird indeed. DCMA would not work here since they are hosting a copy of it for archival purposes, and not claiming copyright. The original public URL is included. Archive.org does respect robots.txt tho. It is possible to completely delete a site's history on Archive.org by modifying the robots.txt (at least in the past, not sure if that is the case now)
Wow. I tested the link after your comment and it was broken for me at that time as well. So the link really does seem to have flip-flopped between working and non-working a few times. Sound like some kind of weirdness in the archive.org infrastructure might be causing it.
It's working now!