Fire the hiring manager
If the developer had enterprise database experience, this wouldn't have happened. My fingers wouldn't let me blithely type commands that alter the origin database when the point is to create a local copy.
Where I work, erroneous, unmoderated and outdated home-brew docs are commonplace. In time, you learn not to follow them to the letter, but new hires generally get bitten once before they gain this wisdom.
It's not the dev's fault for not knowing, it's the fault of the hiring manager for not properly qualifying the applicant. Punt said manager, move the applicant into a more suitable role, then make this incident an interview question to ensure that future candidates are screened for database skills.
Biting the hand that feeds IT
