Brake trouble, right wheel get hot

You are spot on. My owners manual makes no mention of downshifting. Prudence and common sense prevail. The Glueguy analogy is a good one.   I have towed for years I don't make a habit of downshifting autos, just me. But agree circumstances prevail.

To clarify, I agree proper downshifting is a proactive was to reduce vehicle speed. The operative word is proper. One has to be careful of over reving and to not shift down more than one gear at a time, if it can be done wrong it will.

unfortunately Stephen, the picture doesn't help. Great idea though. I notice the problem as I watched the movement of the brake. The picture has great detail, but I don't see it in real 3D and live movement. I'm sorry about that.

I had this exact problem, with the right wheel as well. My dealer also told me there was nothing wrong. I went back and took a look. I don't remember exactly what it was I found. I found that a part of the brake assembly had a bit of play in it. It might have been the magnetic piece is, I forget. They were explaining how it all worked and that's when i found it. I told them that i think the brake could get stuck "sometimes" if that part happens to get in the way. I convinced them to give me a whole new brake assembly under warranty. I havent had a problem since. I monitor my hub temperature pretty closely with a laser thermometer. I wish I remembered exactly what it was. If I was looking at it, I could pick it out in a second. My dealer did propose taking out the self adjusting brakes on mine if I kept having problems, but THEY were going to warranty it. I think your dealer might suck.