Temple derived his claims about the Dogon from Marcel Griaule and Germaine Dieterlen, two anthropologists who had written Le Renard pale (Temple's primary source) about the Dogon. The whole story is rather long and complex—and laid out here—but the gist of it is that Griaule convinced himself of mythologies and facts that were not external to him, and Dieterlen embraced these same views after working with Griaule among the Dogon for many years.
So, when Van Beek discovered no factual support for the claims, he courteously let Dieterlen—who died in 1999—see a copy of his findings before he published them. Her reaction—and she was an actual, credentialed academic—was just like that of any other alternative theorist: suppress the truth to protect the lie. Van Beek sat down with Dieterlen in Paris to discuss his article:
I braced myself for a long critique, but she had just one question: “Pourqois le publier?” Only that, why publish? She had no answer to my arguments; in fact during our two-hour conversation that followed she never ventured into the content of the article at all, but just pleaded not to publish it. It was, evidently, also the most difficult question to answer, and one I had been reflecting on very long. I answered, truthfully I think, that publishing is the very soul of science, and that debate is the way to proceed in getting closer to the truth. She had no comments on that, but instead started reminiscing on the past.
Walter E. A. van Beek, “Haunting Griaule: Experiences from the Restudy of the Dogon,” History in Africa 31 (2004) (via Mike Heiser).