Paulette,
That's fantastic!! I thought the pictures would show you rolling down a paved road. No way, you were really doin the off-road mountain thing.
I have an lumbar MRI of a L5S1 and the ADR pretty much wiped out the image at L5S1 level. A little further down the sacrum and the image gets normal.
I have some recollection of forum patients having nerve block injections in the sacrum. There's some SI links here:
http://www.kalindra.com/
Take care,
Jim