It looks like I have the latter half of the event in my screen shot archive. From the Trinsic Harry, Phantom Rider battle, vending machine and the after chatter.
I'll see if I can't do some type of retro reporting for the Halloween events. The EM's did a bunch of entertaining events during that time. I honestly haven't spent much time getting reports up as there doesn't seem to be much of an interest in them. That and I've been busy doing other things real life, learning all the new and not so new features in the game (even dumped my y2k template and redid my decade old macros).
I keep an archive on my personal site
-=Order of the Eight Virtues=- Ultima Online Pacific Guild, a handful of reports that don't make it to stratics get tossed up there. Don't have the Halloweenie report up there though. There are some older stories that didn't get mixed into my "EM news system" hidden in the site.