The way I understand the TOR is it can be run manually or automatically and I would think every one would prefer to let it do its thing. Much more accurate and much much faster than a human trying to engage multiple or single targets. I do believe this was an accident, they were fired up awaiting the incoming to crater the runway and someone forgot to turn one of them off. It saw a return in its target sector and said "Oh look, a target, time to go to work", and it does.
bob