There is dialog box that comes up when you attempt to delete the SAML configuration:

Delete SAML configuration?

Your users will get back to logging in with their credentials.

As an admin, I would like to better understand the implications (if any) if I decide to unsubscribe to Identity Manager before deleting the SAML configuration.

In particular, how exactly would this impact users (both those already logged in and those that will subsequently login at some point in the near future).

Does "Your users will get back to logging in with their credentials" mean users still login with their email address? Will passwords be impacted? What if a password policy is already established?

Ideally we could add a paragraph to expand on this topic at the end of the SSO document:

https://confluence.atlassian.com/cloud/saml-single-sign-on-939718272.html