Tim, I see tapping out as a set in stone rule also but ask you this: when should a person tap out in your view? Therefore what is tapping out?
1. You have me effectively pinned so we are done (for a newbie, if he has done everything as correctly as he can, whether or not I can actually get up from it; otherwise, the pin is applied in such a way that I have no desire to try to get out of it)
2. You are actively hurting me or are about to injure me.
Since nage has no way to know which it is unless I'm also yelling OUCH OUCH LEGGO! it behooves nage to release right away, even if we are in the middle of technique and nowhere near the final pin.