I know all of you must have experiencing this situation, AD Server got crash and you cannot do a decommission so you have to do a metadata cleanup using ntdsutil. Now if your environment running Windows Server 2008 / 2012, you just can easily do it from GUI ADUC Smile.

Just right click the effected Domain Controller server, and choose delete, click Yes one more time and it will prompt this window like the following picture.


More information, came across here : http://technet.microsoft.com/en-us/library/cc816907(v=ws.10).aspx