Post date: Aug 15, 2014 2:3:44 PM
Install the Windows Azure Active Directory Module for Windows PowerShell from http://technet.microsoft.com/en-us/library/jj151815.aspx
open Windows Powershell and import the azure module by running import-module msonline
Afterwards connect to the service running: connect-msolservice
Please provide Global Admin credentials when asked for.
Afterwards run:
Remove-MsolUser -UserPrincipalName user@contoso.com –force
And afterwards
Remove-MsolUser -UserPrincipalName user@contoso.com –RemoveFromRecycleBin –force
This would fully delete the existing Office 365 object.