I have a subscriber delete application (it looks very similiar to the BulkLogoutUtility currently up on my page, only it removes subscriber properties instead of logging Unity out of folks' mailboxes). It's not on my web page since I was a little concerned folks would shoot themselves in the foot with it.
Take a look at the BulkLogout user selection interface (by alias, extension range, COS assignment, Public DL membership or CSV file import) and if you think that would work for you, let me know. When I get home I can post it to AnswerMonkey for you...
Jeff Lindborg
Unity Product Architect/Answer Monkey
Cisco Systems
lindborg@cisco.com
http://www.AnswerMonkey.net (new page for Unity support tools and scripts)