Panmic Stations: Thanks for the comment. Guess I'm deferring to experienced-pilot expertise now, so will shut up with my 1A back seat driving.
The galley scream wasn't audibly matched elsewhere (but then Bose headphones are meant to muffle out background noise other than from the immediate vicinity).
I'd really like to take you up on your kind offer and find out what did actually go wrong, as feel sure it was recorded on the log.
Feel free to PM me if it would prove indiscrete to post on here.