Hi Peter --
Thanks for your generous comments; I'm very glad you found my perspective on communication useful to you.
On my first read through your essay I found it rather tightly focused on a particular aspect of spin-measurement that I don't feel at all competent to assess. But I'll try again to pull out what you're saying about the method of communication.
As I understand it, though, quantum entanglement and the issue of correlation of distant measurements applies to any measurement of a quantum system, not just to spin. Does your argument generalize that way?
As to "superluminal nonsense" -- I think the seeming "paradox" arises from the very basic, nearly unquestioned assumption that all aspects of physics should make sense within a single unified structure. Yet all evidence seems to indicate that the way QM describes measurement doesn't fit into the causal structure of Relativistic spacetime.
If we think of physics rather as a communications system, though, we should expect there to be a number of essentially different structural frameworks, in base-level physics. That's because any meaningful (measurable) interaction always requires a context of other kinds of interactions, to which it makes a difference. Though I'm not yet able to argue this very persuasively, I think it's true that if the physical world were really the kind of coherent, unified mathematical structure that's usually imagined, it could support no observable information.
So I'm not surprised that QM gives us one system of correlations between our observations and Relativity gives us an essentially different one. The two don't contradict each other, and both seem to be required to support the kind of world in which things are measurable.
Thanks again -- Conrad