Here's the scoop.
There is no herniation or stenosis.
There is major sciatic nerver irritation of unknown origin. It may involve the sacroiliac joint (SI). He put me on Prednisone and Lyrica for the nerve pain. If there is no joint invovlement, the pain should be much better in a few days, with the lyrica helping to solve the problem for the next 3 months.
The grinding movement is probably arthritis setting in and has nothing to do with this problem.
I am looking foward to being normal again!