Hopeful and free in a comment said something profound about "returning to equilibrium". That word is really what I feel really defines coming to a fat acceptance perspective.
Rebalance. Integrating your sense of self back into your consciousness.
In some ways its got nothing to do with being fat. Or the crusade. Having thought and behaved according to certain dictates that take you away from yourself. Needing to move away from that and back to a fresh sense of who you are and what you've learnt.