If you have WHM. Go into it, and click packages in the main screen. Click add new feature list. then find urchin, and unselect it. Then go to edit acounts, and set that person's account to the new feature liist without Urchin on it.
I am not able to see urchin stats in features list. However, I am able to see AWstats, weblizer and analog stats in it. Is there any other way to disable urchin stats for a domain?
If any domain need not wants the urchin stats, just rm -rf /home/username/tmp/urchin
or /usr/local/urchin folder if server need not wants to run urchin stats for all account, otherwise chmod 000 /home/username/tmp/urchin to disable permission to load stats for the account.