First make sure that you are actually in the Rails console. (I’ve edited my instructions in the previous post.)
To check if you have deleted all the SingleSignOnRecords run the command:
SingleSignOnRecord.all
It should return something like this: []. If instead it returns some records with data, you will know they haven’t been deleted.
While you are in the Rails console, you should probably also log out all of your users by running this command:
UserAuthToken.destroy_all
When this has been done, SSO should work correctly for you.