Ok, all laid out there I disagree with a lot less of this theory than I thought I would. While I doubt they often sit down for afternoon tea, I have no problem with both Uriel and Odin working towards a common goal and with a certain amount of accommodation if not active conspiracy.
My main contention is in characterizing Mab as (knowing/willing) part of that alliance. Correct me if Im wrong, but the only evidence you site that she is working with them is that bit from bob in GS. But Bob's theory that they were working together was purely based on the fact that there was an unusually long winter indicating that she was still in town. Which we later learned was because Uriel had, apparently against her wishes, taken Harry's soul on walkabout, forcing her to sit still on earth and give mouth-to-mouth to a human for months, out of season and at great personal strain. All so he could teach her new pet that he she was mistaken in her belief that she could mold him at her whim. And in this case at least we can be certain that she was not simply misleading him as part of some greater manipulation, since we have a WOJ that she was being entirely Truthful, and just happened to be entirely Wrong. If it were all a collaborative scheme between her and Uriel, that could not have been the case.
Im not saying Mab isn't a Grade A puppetmaster, but I think she's getting handled as much as she is handling Harry. In the Grand scheme she isnt master of the house, she is the big scary Guard Dog at the gate to keep trespassers out; and Titania is the slightly less scary violently aggressive Dog in the house that's there to stop the big scary dog if she gets off her leash.
PS. is it just me or does every thread seem to derail into a White Court discussion lately? I myself derailed the Deidre thread earlier today....