My horse suffered severe laminitis from Potomac Horse Fever. Duct tape on the raw soles, epsom salt, banamin and bute daily interchangable got him through it. It took several years. He also was plagued with absesses afterward and even had to have subsequent surgery to remove a large keratoma. Packing and cleaning the wound every other day for nearly a year got him through it, but what work! I think it was due to not shoeing him but rather listening to "natural" hoof care enthusiasts.
As far as leaving your horse barefoot, I wouldn't advise it if he is soft-footed and prone to laminitis. In my limited experience, my horse has not had an absess since I started this procedure and decided to use farrier instead of "natural" hoof care. My advice: shoe your horse regularly and year round to prevent further problems with absesses.