We don’t know what Ayers or Zero thought; to me it looks like a perfect legal CYA - “we never said it was really really true!”.
They are now clearly in an official fallback position - “so what if it turns out he was foreign born? It doesn’t matter, he didn’t know” etc.
What they do NOT want anyone to look at is parentage.
And that's WHY the KENYA KENYA KENYA stories are allowed to float and all the articles that refer to him as KENYA BORN have not been scrubbed. As long as the KENYA myth lives, Barak Hussein Obama ONYANGO remains in people's minds AS THE FATHER!