http://support.citrix.com/proddocs/topic/xmob-dm-85/xmob-android-user-enroll-unenrolldevice-tsk.html
To unenroll your Android device from Device Manager
http://support.citrix.com/proddocs/topic/xmob-dm-85/xmob-android-user-enroll-unenrolldevice-tsk.html