K. Brian Kelley (8/29/2013)
With the different accounts in different environments, they are all admin accounts. Just one works for dev and one works for prod and dev never has the ability to work in prod.
Unless the same person is doing both and happens to have different SSMS windows open. In which case, it doesn't matter what that person does to prevent these things from happening in the future, they still will happen unless that person double-checks and pays attention.