The "Forgot?" blog control recovery wizard is sensitive to team blogs - and to the access level owned by the existing members in the team blogs. If the team has only one administrator, that one administrator cannot delete or demote himself , using the dashboard Permissions wizard. If the one administrator deletes his Blogger / Google account, on the other hand, a team blog is left with no administrator. You can't have a blog for long, without an administrator. So when a team blog member requests recovery, "Forgot?" checks the team blog members - and if no administrator is found, sends recovery email to all of the authors .
What Blogger won't tell you