The Super males are stunning... I would not recommend adding more than one male. I've not heard of a male Flame wrasse reverting back to female.
We acquired a "mated" (I will use that term loosely) pair over a year ago. Several months back, for whatever reason, our female decided to turn male. Ours get along, but the morphed male is obviously a sub-adult and is submissive to the super male. We also feed several times a day to keep everyone "fat and happy".