Does the verse say "the head of Christ is GOD", or, "the head of God is God", or "the head of God the son's flesh is the Spirit"?Yes, and it says nothing whatsoever about the ontological status of the persons listed. Why are you making such irrelevant points?
Yes, God the Father. And? If you were being intellectually serious, you would have been interacting with the fact that Trinitarians generally read God as in reference to God the Father. So for the Trinitarian, the statement "the head of Christ is God" means the 1st persons of the Trinity is the head of the 2nd person of the Trinity. No problems here; such has always been a part of Trinitarian theology. So, do you have a meaningful critique, or are you going to continue to express your ignorace and hubris?