In that case, another option that is far easier than adding another post, is to add to your bookmarks in your browser.

Oh well, you got the point I'm sure.

In any case this whole thing seems to depend on whether it is viewed as a game or a simulation. If a game then it has set rules. If a sim, well in war there is no such thing as fighting fair(if you except basics like-"thou shalt not shoot shipwrecked sailors", etc).
It is obvious from history that nobody really knows what will happen. What if the real torpedo had a corresponding bug in it?
Moreover even if doctrine is wrong murphy's law must always be accounted for.
If the torpedo was not decoyed by the SLMM what did happen. Did it just cruise by merrily? Did it stop to sniff at the SLMM for half a second then move on. Did it change course near the SLMM at any time(in which case maybe it really was decoyed).