This is an interesting post. After all, this is probably how a LOT relationships end, anyway. There might be some other event that culminates in the relationship ending (i.e. her going completely cold on you or cheating on you, etc.), but THIS is the root cause of a lot of relationships ending.
I find this is pretty fascinating idea. I wouldn't really want to try it or think of it as being an "honorable" way to go about ending the relationship, but if you really want her to get over you and have a clean break, it's not like doing this will "hurt" her or anything. She'll just think of you as a total low value chump after it's over.
And I would also be curious to know what the follow-up would be. Would it be "congruent" to be AFC until the relationship ends and then never contact her, reach out to her, etc. after that?
If she loses attraction for you because you intentionally go AFC, does that then introduce a risk that she'll become re-attracted when you stop putting on the AFC act after it's over?
It's an interesting though experiment, at least. Kind of like a mythbusters-esque drill to approach a common issue from its absolute logical extremes.
I almost think sometimes when girls want to end relationships, but don't want to do the "dirty work," they will do their own version of this for you. They'll go cold on you, ask for space, etc. which will be win-win for them either way: they're hoping you either comply with their request, and lose feelings for them, OR shoot yourself in the foot and get needy and AFC, which gives a pretty much automatic way to end the relationship. ....or some chain of events that has a mixture of the two scenarios.
Basically, I think the "honorable" thing to do is to be honest and considerate. But I think your idea has some merit, at least intellectually. It's something that I think is worth debating and pondering within this community, which is not necessarily to endorse the idea of someone actually trying it.  | 
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