You all are missing the point - at address, the club face is 90* to the plane line. At the top, it is 45* to the plane line. Therefore it has opened 45*. It is only 'closed' using current common golf terminology (correct or not). One would only have to work 'half as hard' to square off at separation from the position in the picture as some one whose clubface lies parallel to the plane line (90* open).
Could be seen as a matter of semantics, but the club has opened 45* to the plane line.
I know for myself, I have always been concerned that I was a little 'closed' at the top and kept trying to get the clubface on the plane line. Hell with it - take it back to a position where you feel comfortable in bringing the club down plane and beat the s**t out or it.
Bruce