Wow, both archive.org and archive.is' oldest snapshots are of a notice that the story is hidden pending editorial review. NPR may have purged this from the Internet pretty darn well.
Makes me wonder who really called them about it.
EDIT: rightos managed to find the original story on the archive.is page from another website: https://archive.is/QxQtZ
Generally a retraction is in the form of a note that the top, not attempting to purge a story from existence over a minor technicality.