I don't know, I am beginning to think JR is quite comical. All I have to say is that I am beginning to see a lot of where s/he is coming from.
It does seem as if several more horsemen and women are clinging to the idea of being 'all natural.' Don't get me wrong, I do believe in some natural horsemanship. However, I do know when to draw the line (for myself) for the understanding that me on a horse's back is not
Some horses are fine without shoes. Some aren't. It's quite simple. And I believe that each horse's needs and uses should be accounted for. Saying every horse can be worked without shoes and have no problem is a complete blanket statement, vise versa. Both of my horse's get completely different shoeing, and there are several reasons for the way they are trimmed or shod. My standardbred has wonderful feet and doesn't require shoes. My appendix on the other hand leans more toward the TB side and must have shoes. He becomes lame without them. I believe it is cruel for an owner to withhold shoes from a horse who obviously needs them. If you can see lameness due to having improper shoeing or no shoeing, get it fixed. Riding a horse alters it's natural state. You are going to have to make adjustments to compensate for this alteration. For example, my appendix has a large quarter horse front end. He tends to be a bit heavier on the forehand and can have an unevenly distributed weight. Therefore, his front feet are the first to become sore. His front feet are shod. His back feet hold up fine without shoeing.
I just don't think there is a one way answer to this. To the OP, in my opinion, if your horse is lame without shoes, for gods sake, shoe him!
Edited to add: Why do you want to keep him shoeless so badly?