Remove data from Active Directory when the normal demotion fails for windows 2003 server

1. run "ntdsutil"
2. type "metadata cleanup"
3. type "connections"
4. type "connect to server "
5. quit and get back to "metadata cleanup" menu
6. type "select operation target"
7. type "list domains"
8. type "select domain "
9. type "list sites"
10. type "select site
11. type "list servers in site"
12. type "select server "
13. type "quit"
14. type "remove selected server"


After you remove all the data, you should be able to normally demote your AD server.