I don't remember exactly what I read to get this idea. Perhaps it was this particular presentation slide:
The great news is that it must. Some of the helpful folks on IRC introduced me to two different methods of retrieving the information I was looking for from my backups. I tested both and they worked excellently.
Using pg_filedump I was able to find the records in the raw files on disk:
And with the pg_dirtyread extension I was able to have access to the records from the running database server:
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