I have a copy of W.W. Gods. Russell was one of my ski buddies back in Taos/Telluride. I paddled with him a bit, but that was in the late 90s before his expedition paddling really took off.
After the get together in Ophir following his death I learned that Tom Tatum- out of Telluride edited WW Gods and also had ties to the footage from Russia.
I don't have a contact for him, but try googling Tatum Communications Inc and see if you can get a # or email.
Might be worth calling Matt Wilson via 4-Corners River Sports. I think he still owns the rafting contingency of 4Corners. He might have some leads to as he was on some of the sections they ran in WW Gods.
Best of luck