For goodness sake, don't worry like this. Until I started to get feeling back in my feet, I didn't get any of the prickles and cramps which you describe, but after was another matter! Just focus on the fact that none of the lesions were enhancing, which means they had developed before you started on the antibiotics. They will fade in time, mine are fading still, nearly two years on. Also the fact that you are able to work long hours, drive, work out and run! My goodness, I wish I could run, hope I will again soon: I used to be a cross country runner many moons ago. Don't waste your money on CRABS, they might reduce the number of relapses someone has, but that is all. Likewise with the LDN: well, that won't cost so much, but you really don't need to, honestly.
Keep your pension funds intact, for goodness sake!
I would hazard a guess that all this is emotional: you work so hard that you haven't had much time to really think about everything since the MRI scan, and now it has hit home, which is understandable. My goodness, you should have seen my first scan, it was frightening, but luckily for my state of mind, I didn't get to see it until I was shown it alongside the second scan, showing the enormous improvements, but that night I cried because I had no idea that all this was going on inside my head for all those years. But please remember that two years ago, my right arm was completely useless, but now I can do this: