Your server support person did wrong and language is no excuse for them. If there's any ambiguity, if data may be lost, if something may cause an outage - then

Your server support person did wrong and language is no excuse for them. If there's any ambiguity, if data may be lost, if something may cause an outage - then they have a duty to tell you and then ask if you're sure. I do it all the time. "Give this access to this user to this db." 'Okay, but do you know they'll be able to drop your db?' "Oh shit okay wait a sec..."