Well his complaints about the talk are after the "loon" bit, and you didn't say anything to the effect of, "well he called me a loon but did explain his position", so I figured.
I explained it as clearly as I could: he called me a loon because I said something that was wrong. And he was correct: the thing he claims is wrong is indeed wrong.
What he failed to notice (or at least failed to mention) was that the wrong comment was preceded by me saying, "I am about to tell you something that is wrong because it makes an interesting and illuminating puzzle to figure out why it is wrong." And it was followed by me saying, "Obviously what I just told you can't be right (because if it were I would at the very least have won the Nobel prize in physics), so there must be a flaw in the reasoning. But where is it? Well, it's here..."
What he failed to notice (or at least failed to mention) was that the wrong comment was preceded by me saying, "I am about to tell you something that is wrong because it makes an interesting and illuminating puzzle to figure out why it is wrong." And it was followed by me saying, "Obviously what I just told you can't be right (because if it were I would at the very least have won the Nobel prize in physics), so there must be a flaw in the reasoning. But where is it? Well, it's here..."