I'm using an Alestic image which disables root SSH logins, but provides a user "ubuntu" with NOPASSWD sudo privileges. See here.
In the course of trying to add a new user to the sudoers file I inadvertantly created another line for the "ubuntu" user, this time without NOPASSWD. I have now apparently lost root access to this machine.
Is there some way to mount the EBS root volume on a different instance (fixing the sudoers file) and then re-launch the server?
Or am I totally screwed?