Dutch Uncle,
Thank you so much for posting your findings! I was very close to purchasing a new receiver, heck I almost bought a replacement 805 just for the remote. I did however purchase a refurbished URC-6690 from eBay for $13.90 shipped, put in code 0815 and ALL functions worked flawlessly! I would have to think that other OFA remotes would work but for those interested I can say with 100% certainty the URC-6690 works perfectly with the Sony STR-DE 805G Vision Touch receiver with no need to use the key mover feature of the remote. I can not thank you enough for posting your findings earlier, hopefully this will help others as well.
Thank You Again!
For anyone who reads this post in enough time, the seller still had several left
[Link: cgi.ebay.com]