Questioning the use of 'Official'
Good questions. I'm certainly not the most capable at clarifying, but I can say that I have a similar understanding of the relationship. Although I think there is more to the Foundation than WE. My reading suggests that WE is the main mechanism for achieving the goals and vision of OERF. OERF's About page provides the bigger picture of the foundation and how WE fits in. Note that there is a WE.com entity that is a for profit initiative (I think).
I expect Wayne will chime in here at some point and help us both come to a better understanding as to the relationship.