Yep - there are updates. The runs and crouches have been changed to hopefully reduce/eliminate the 'spin' that you mention. The walks are still that way, but who walks in this game?
Updates include:
Improved animations
revamped blue color skin - now over 20% frostier
updated .upl file - you no longer need to change your Xplayers.int file to see the description text
new chat portrait (see my avatar!)
so visit my UT2004 page and check him out - the species file was removed because UT doesn't let you play on line with a custom species
http://home.comcast.net/~gregfisk/ut2004.htm
Also, there are other UT2004 models, including UT2004 versions of:
Pierre Ze Soopair Moogair
The Junkyard Mech
and recently updated - with all new animations and so on, Bender from Futurama!