A Google admin for the OU who is also an admin on the License for the Don Johnston tool can remove the OU.
1. The admin needs to login to: universalpar.com
2. Select, "Manage Students".
3. Select, "Organizational Units".
4. Click on the Trash can to the right of the OU you want to remove.*
5. Select Notify me if you want to know when the OU has been removed from the tool. ( You will be sent an email when the OU has been removed.)
6. Click on,"OK".
It may take a few minutes for the OU to be removed. You will need to log out then back in to see the changes after the sync is complete.
*The students data is stored in the users account, student data is removed after 30 days if the if the user account is no longer associated with a uPAR license.