I haven't had the time to watch Going Clear, but I did watch "I Escaped a Cult" on Netflix and it described the Aggressive Christianity Mission Training Corps, and the similarities here are chilling. There was a lot of talk about how the members of the church were part of 'God's Army', and how they lived in a faux-military style, with the leaders of the cult wearing home made military uniforms and constantly talking about battling for souls. Had he had time and further influence, I could see Andy turning 'Dumbledore's Army' into his own version of that.