I would suggest that "shots fired in anger" is a relative term. It is true that the only direct engagements against positively identified enemy combattants were those prosecuted by members of Recce Pl during the initial stages of Op ANACONDA. However, I would argue it is also true that the many direct-fire SA and AT rounds, satchel charges, etc, expended in prepping sangars and caves for clearance on the Whale were fully intended to kill enemy soldiers. The fact that those fighting positions had been abandonned is largely irrelevant, as the soldiers doing the shooting did not know that. Many soldiers within the rifle coys fired rounds with the expressed intent of killing enemy combattants. We can split hairs all day long, but I would consider any round fired with the expressed intention of killing whoever is at the far end, to be a shot "fired in anger".
Apparently the guys you've been talking to around 3 VP have also forgotten the mortar barrage fired with the intent of killing the escaping AQ on the South end of the Whale. I am personally aware of yet another incident where a Pl Comd engaged an enemy target with rifle fiire during a bunker clearance with his signaller. The fact that the engaged enemy turned out to be previously deceased should not belittle the fact that upon transitioning from bright daylight to a dim bunker and idenifying a potential threat, the individual in question immediately engaged to kill. Again, I would suggest that those were "shots fired in anger".