We are trying to Reset a single User so that they must re-register for SSPR.
I have seen past discussions of FIM 2010 that it is possible BUT NOT SUPPORTED to edit a user and remove the correct workflow from the AuthN Workflow Registered attribute via Extended Attributes button on the RCDC form.
If the Unregister cmdlet is Supported (?), what is it doing which is different from editing the user via the user edit form?