The problem with AFB is it's a spore producing bacteria. That just means it has a shell that resists heat, chemicals, and so on. Temperature should work if it is applied for a long enough time. However, I have not found, in three years of searching, any good science to address it.
Most of the stuff I've heard are worried statements by beekeepers. Think "Swine Flu." It will last for 50 years, it survives nuclear holocaust, it will do "home invasion," and kill your cat as an example.
As an example, I was taught to "hard boil" water for 20 minutes to destroy the spores, organisms, and pathogens. I would also recommend boiling the water for 20 minutes because then you know the temperature of the water. It has been proven human pathogens and the spores die when held at 165°F (74°C) for 20 or more minutes. You may have to heat the spores to 130°C (266°F) to kill the disease, but that seems like it's just brought to that temperature.
If I ever get a straight answer to that single question, I'll let everyone know.