With regards to PT, I didn't get any permanent relief of symptoms related to the cysts with PT. I'd avoid internal manipulation of the sacrum. Although it felt good to get my sacrum straightened, it would quickly fall out of alignment and it would aggravate the are in general. My pelvic floor specialist PT eventually stopped messing with sacral alignment because it was painful. She was also the first to clue in I was tender along the sacrum. What did help me some was myofascial release and massage of pelvic floor muscles and tissue but I also have residual tissue damage from a massive hematoma in the area.

Personally, I would stay away from a chiropractor. You do not want to do anything to accidentally damage any of the vertebrae and depending on how severely your cysts impinge on the vertebrae, it could be easy to inadvertently damage degenerated vertebrae further. Many people with the cysts have sacral degeneration that doctors may try to tell you is normal with age, but may be due to the cysts. Dr F is clear about being protective the sacrum and is why he puts a dorsal plate in addition to treating the cysts with sacral laminectomy.