I propose that this interpretation makes better sense of the text than does the suggestion that the Father and the Son are here essentially divided. It seems much more likely the case that Mark has in mind the fact that Jesus has been handed over to the suffering of the cross rather than the essential relationship between the Father and the Son.
How do you take this passage? Do you think Psalm 22 should guide our interpretation of Jesus' cry from the cross? Are there other elements in the text that suggest other interpretive options? How should we go about deriving theological conclusions from historical and narratival texts?