Good news! I was able to find another backup of the site, including those pics of the Monster in UT2004. Take a look!
I also got back the PHP conversion of most of the site, the refocused portions of the site (and removal of the extraneous game types, since they're already built-in to UT2004). I believe the only things missing are some server-side news formatting changes and a backup of the updated news posts (and reader comments) during those few months. Lesson learned.