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					Originally Posted by  kdf5
					 
				 
				In 5., that is totally wrong.  What kind of play was occurring at the time of B's IBB?  Was it a running play?  Was it a loose ball play?  You better say running play because it wasn't a loose ball play.  Where is a running play enforced from?  It's enforced from the end of the run, right?  Where was the end of the run?  It was where B fumbled.  That's why you throw a bean bag.  You would enforce B's IBB from the bean bag. 
			
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 I think you had this right in an earlier post. While B is in possession, they are by definition the offense. The spot of their foul is behind the basic spot/end of the run (presumably), so under ABO the penalty would be enforced from the spot of the foul.