BD,
I actually wrote a reply earlier before I went to work and scrapped it, haha.
The thing to keep in mind is that these tactics and strategies only work when a girl views you as a high quality guy and somebody worth holding on to or afraid of letting go of which is why you will find most situations can have varied results. If I go aloof on a girl she will likely chase me down, but if the average guy does that same thing with the same girl she will likely let him go - the strength of the strategy has a lot to do with how a girl views you.
Anyway, if you'd already fucked her and she stuck around then she's developed some loyalty to you so snapping CAN be the right strategy, in some cases. It's not like going aloof is the end all be all - it's only a single strategy, ya know?
Second problem, if she misses your attention then she will sniff out what is wrong (which is investment, haha) and make a decision or she will chase you down - again, though, that really only happens if she views you as valuable and worth holding on to. Plus, all of these things change depending on her investment in you (as you pointed out) because if you've already fucked her and given her a few great orgasms then the entire dynamic changes in your favor.
Last note, since we are talking about getting angry/mad - there are certainly times where it is okay and, even, necessary to stop being cool and nonchalant and put the kibosh on something but, even in those situations you should be stern and absolute instead of angry or mad. Remember, anger comes from a sense of powerlessness and you should never feel powerless in a situation but you can totally be stern and absolute without anger. But, those situations are very nuanced (as you likely know) and the general answer is to remain cool and upbeat.
Last last note, haha. A great example comes from the situation I'm in - this girl was calling me every day (getting my attention and investment) without offering anything back and this is a girl I had been intimate with before so I gave an implicit ultimatum of "Either we remain intimate or I'm gone" and she didn't believe me, at first, since I didn't directly say I would leave or walk out so she brushed it off - 2 weeks go by and I don't answer a single call or text until she hardcore chases me and submits to my ultimatum and we've been intimate ever since. In that situation, the correct play was to give her that ultimatum and let her decide but I wasn't angry - it was simply the smart thing to do.
-Richard