Just an update here in case anyone ever needs this particular part or needs to contact REMO for a similar reason.
My friend called REMO on Friday, and after getting transferred to parts, got a rep on the line and within about 30 seconds of describing the part that was needed, the rep butted-in with "what's your address?"

REMO said they would ship two of the hooks for free using next day shipping.
So, good REMO experience to report, and also a modern-day example of where picking up the old telephone was the best solution.

Thanks again, Bart, for the suggestion.
