[no_mind_golfer]

I think there was an earlier post which asked that you take a club and hold it between your finger and thumb (top of the grip)and let it hang .Then rotate the grip back and forth.The shaft does not hang vertically.The clubshaft rotates around the sweetspot(as does the toe of the club),do you think this FACT will not occur when free swinging a club -with no clubface manipulation(ie horizontal hingeing)?

No... it doesn't happen during the swing. When the club is suspended the CG of the club seeks the low spot... That's where the ineria is minimized. when its twisted from this pos. , the hossel naturally rotates around the cog.

When swinging the club... force is imparted not the the cog but to the shaft through the grip. It would be leading (on the plane of the swing) and the Cog would naturally want to "fall in line" on the plane. The face would want to open not close. But because of golfer anatomy the wrists rotate on the downswing taking the face with (provided grip doesn't slip)