We have a developer org and all of the users (including the admins) in the org have the same profile and the profile was mistakenly updated to have NO rights. (simplified version of the story). Now all of the users have the same profile (Salesforce Licence) that has no access to change anything.
I have already logged a case with Salesforce. I was wondering if you can think of ideas we can try to revert the changes or somehow change the profile for one of the users so we can log back in.