To answer the speciic question, I agree with Dr. Mom, there are different ways to do pretty much every OMM procedure, there are plenty of variations. In fact, I would say that its actually quite rare to see 2 practitioners do procedures exactly the same. That being said, there are definitely ways you can do most any OMM so that you'll have minimal strain on your wrist, or so that you can keep your wrist straight.
Carpal tunnel is a realy interesting topic. Its definitely important to have it diagnosed properly, and determined whether or not its arthritis, inflammation, burisitis, tendonitis, writers cramp, etc since they're all slightly different and have different underlying causes. Carpal tunnel syndrome refers to the median nerve compression within the tunnel, however the causes can vary as well.
I've watched a few carpal tunnel release surgeries. The condition should definitely be managed medically first. Usually surgery is not indicated until the patient absolutely wants it, which is about 6 months of conservative therapy resulting in persistent pain and/or motor and sensory deficits. A combination of rest, strengthening excersies, anti-inflammatories, and good wrist management/technique can help control or reduce symptoms for most people.
The carpal tunnel release surgery is a very quick procedure. It only takes a few minutes, and its one of the most common surgical procedures. They basically just make a small slit on your anterior wrist and cut through sheath of the tunnel, the flexor retinaculum, and this frees up space for your 9 tendons (4 from felxor digitorum superficialis, 4 from flexor digitorum profundus, and flexor policis longus tendon) and median nerve. Its pretty cool.