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					Originally Posted by  letemplay
					 
				 
				Suppose the ring returns to original position but entire structure (backboard and goal) are shaking such that the try gets bounced off rim? 
			
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 "original/normal" position means that the rim has stopped moving/vibrating. It's in the same position it was before the grasp. If a player grabs the rim and causes it and the "entire structure"  to vibrate/move then it is BI if the ball hits the rim and bounces out.
9.11.4 is the case play where a defender grabs rim.