The safest approach would probably be to cut off the one setting, and make replacement, but if you wish to try to use the torch, and shift the offending setting back into place, it can be done.
You must really secure the rest of the assembly so that the only piece of it that can move is that 1 setting you wish to relocate.
Clamps, holding everything very securely, or setting the ring into investment so that only the one area you wish to work on is exposed, are both possibilities.
Having a laser, I would slightly tack weld the settings that are in the correct alignment, so that they can never shift again, then clamp the ring securely, and use the torch to reflow the solder under that one setting just enough to shift it back into place.
My first instructor in this craft used to say that a craftsman is not someone who never makes mistakes, but someone who knows what to do to correct them.
Good luck. Every job is a learning experience, even after 40 years riding the bench.