The Tommy Thompson article was submitted before Oswald was murdered with extreme prejudice. Thompson was back in Los Angeles when that happened.
To accommodate the information that Oswald had died, the article text (and I would assume particularly the end portion) was edited. Because of time limitations, it's possible Thompson wasn't involved in the revision.
The original Thompson article was published in a small number of Life issues. I believe it was titled "Assassin: The Man Held for Kennedy's Murder". The banner was then changed and the Jack Beers photo added, along with the story updates.