What a lovely, mature, and effective method. I LOVED reading this piece, and will use your 4 phases with a big smile. Well organized.
Two additional thoughts, briefly. Are you familiar with the work of Deeyah Khan? Her interview with Russell Brand a few years back was stunning in it's power and insight, and her methods are quite similar to yours. But instead of dealing with internet trolls, she's working with folks in extremist groups. Fearless this lady is.
Secondly, have you heard of the Ben Franklin effect of turning an enemy into a friend? He was renowned for taking down his political rivals by asking them to do him a favor. Similar psychology but with a twist.
https://en.wikipedia.org/wiki/Ben_Franklin_effect
Here's to a better world, one interaction at a time!