Did you not have a smart device - and type the SQL then electronically send it to the guy so he could just cut and paste the code into place?
I'd have given my eye-teeth for a remote app that gives an unpleasant electric shock to the holder of an iPhone whilst you're talking to him, when he is in panic-mode. Like the movies where they give a hysterical person a sharp slap and they're then instantly OK.
Best wishes,
Phil Factor