When asked if the Race essay was carefully worded to be ambiguous he said:
I tried to transcribe it the best I could but it would probably be best to listen to the audio below.With race We kind of tried to balance it on a knife's edge
...
We tried to really balance the best we could on the information we knew without trying to, we just don't know. There are those that say of course that it was revelation to the prophet Brigham Young. And other camps that say it was just a mistake. We just don't have any direction on it. And some feel we threw Brigham Young under the bus. Others say you weren't hard enough on Brigham Young. So it's really, there is just not enough information on that race in the Priesthood.
I have always felt the the Race essay was written so that it could be interpreted in multiple ways. Each person can read it and end up with different conclusions which can be justified depending on how you interpret the essay.
The podcast is here. The quote above is at about 14:25.
https://www.sltrib.com/podcasts/mormonland/