glad to hear ur tortoise is getting better and the other tortoise u posted appears to be dry looking and the shell looks like it has old damage.
yea its saddening how some people care for there pets I try and take the best care of my pets hence the reason I joined this forum to help me out with the torts.
What are his current symptoms? Are you using a temp gun, or how are you monitoring temps? Is he eating and reasonably active? I have a leopard that didn't respond to antibiotics when he got an RI. I just kept him warm and humid for months. If I remember correctly it was about 6 months before I felt he was recovered. He was eating though and ok besides the raspy breathing. What substrate are you using now? I am so sorry this is such a rough experience for you.