Here are some great links I think anyone trying to learn more about SI dysfunction should check out.
PhysioWorks/John Miller: Sacroiliac Joint Pain. Thorough article by a PT which has a great outline of four stages of recovery, from immediate pain relief to preventing re-injury. Totally meshes with my own experience.
Coordinated Health: Low Back Pain Part 4: A physiatrist explains SI joint dysfunction.
What is the difference between SI Dysfunction and Inflammation? In this video, a spine surgeon discusses the differences between these two overlapping concepts.
Bodyzone Posture Professionals: Sacroiliac Pain and Nerve Pain (does not go into detail on specific SI motions, but great advice from a more general perspective. I especially like Point #4 about how the body is made to move, and overuse often results from forcing the body to do too much of one thing).
Madden Physical Therapy: 3 Steps to Permanent Relief for SI Joint and Pelvic Pain and Top Three Exercises for SI Joint Pain
Tim Highland, Champion Fitness Physical Therapy: Sacroiliac Joint Dysfunction Analysis
Taylored Training and Fitness: SI Joint Pain: Symptoms, Causes And Treatment