I think the first and final link you mention are going to be good resources. I searched MSDN but did not come up with these links, I've got to gain a better approach to searching through the MSDN.
The plan is to break it down into my terms and I'll be posting the final code on codeplex for my project, so hopefully that'll be one more useful reqource on ribbons for the future. I'm wondering if the new ribbons in WPF work similarly, if so we might both see more use from them. Also, Windows 7 is supposedly going to use the ribbon to a greater degree as well, it'll be nice to see how it all plays out.