I've not commented on his death as I hadn't heard about it.

I suspect that WinCon III was the last time I saw him, and I can certainly say he was very personable on that occasion, even if we did differ strongly on the issue of the Big Bang and modern cosmology. This may have been the first hints of him heading to woo-woo land, but while we did disagree we did it in a a friendly and collegiate way and I'm sad to hear he went over the top in later years.