I have been reading the article Patterns of Spread in RSD, and they explain something called disasociated spread that seems much like what you are describing.. The article is very good and I think it can help your quest for answers.. I am right there too..

http://www.msnusers.com/TheCanadianR...ttachments/207

Good luck to ya Rougue and let me know what you think of the article, I truley think it is one to show your Docs and use in apeals .