I've dealt with RSD/CRPS in my upper and lower limbs and in my face, and from my experience as well as others I've talked to, find it improbable that you had it in your face since 2007 without being diagnosed. You can rest a limb without moving and get some relief. With your face it's hard to avoid speaking, eating, and drinking--and gosh even breathing are an issue.

Surgical procedures aren't ideal, but spread can be minimized when precautions are taken. The surgeon should be careful to cause as little trauma as possible to the area--frankly if they were more careful in the first place many of us that develop RSD/CRPS from a surgery could be saved a life of pain. Undergoing a block right before surgery can help, Ketamine can be used as part of the anesthesia, and Lidocaine patches can be used around the surgery site during recovery. (I underwent surgery on the limb that was my original RSD/CRPS site without complications and I'm betting newer surgical protocols are even better now.)