SAML 2.0 Authentication with Azure SSO?

Here are the settings I used.

In Azure

1. In Azure, use the "Add application" button and then select the "Non-gallery application" button.
2. In the Single Sign-on section, select "SAML-based Sign-on" for the Single Sign-on Mode
3. Check the "Show advanced URL settings" checkbox.
4. In the Identifier, Reply URL and Sign on URL fields enter https://<your WHD domain>/helpdesk/WebObjects/Helpdesk.woa
5. In the User Attributes section, choose "ExtractMailPrefix()" for User Identifier and "user.mail" for Mail.
6. Download the certificate (create if needed) and the Metadata XML files
7. Assign at least one user to the application for use in testing SSO logins.

In WHD

1. Under Settings -> General -> Authentication, Select SAML 2.0 from the Authentication Method drop-down
2. Upload the certificate you downloaded from Azure to the "Verification Certificate" field.
3. Open the XML file you downloaded and scroll to the very end of the file. Just before the end of the file you will find an URL, https://login.microsoftonline.com/<your identifier>/saml2. where "<your identifier>" will be your unique ID.
4. Copy this URL from the XML file and paste it into the "Sign-in page URL" field
5. Check the "Show Password Settings" checkbox.
6. In the "Logout URL" field, paste the following URL: https://login.microsoftonline.com/common/wsfederation?wa=wsignout1.0
7. Click Save and you should be done

Is there a way to back out of this if it fails?  My concern is making this change, saving it and then not being able to authenticate in to make the changes.

https://SERVERNAME:8443/helpdesk/WebObjects/Helpdesk.woa/?username=admin&password=admin assuming you have a Tech Admin account called admin with a password of admin and you run over Port 8443

https://SERVERNAME:8443/helpdesk/WebObjects/Helpdesk.woa/?username=admin&password=admin assuming you have a Tech Admin account called admin with a password of admin and you run over Port 8443