Neuro... having a different view of Wikipedia reference-linkSIJ things that seem to run against the trend is one thing, but the one line at the end of all that guff about posture etc has me all trembling with excitement.

"The therapy is direct pressure into the muscle at 90 degrees to the muscle body. the distortion is the indicator of the muscular problem."

is that it?
whatever the presumed value of all that "new" understanding about sij dynamics may be, there seems to be a missing element. You are proposing , if I have this right , that a trigger point when pressed, may unleash the potential of all the SIJ has to offer, having been viewed as having been altered by your tests.
I do like the apparent simplicity of it though, once one has deciphered the detailed explanations and seen it done perhaps.
There is one thing I can't help thinking though, why bother?. My own experience leads me to the conclusion that pain, when felt in the area of the sacrum , is almost never due to the sij at all. I have not seen a dysfunctional sij that was painfull since the late eighties. Maybe there are some out there, but the ones that come my way have thier lumbar spinal dysfunctions and protective behaviours to blame for sij pain. The poor old sij, stuck or not stuck seems to me to be a very unlikely source of pain.
Can you outline why you would spend so much time on these proposals about sij dynamics please neuromuscular, is it to provide a solution to a specific pain issue, or is it an encouragement to see things through your goggles.
sorry about the line where I am trembling, I'm ok now.