I did acquire some in the past for that very reason, however they are hard to come across if you don't know anyone who imports corals, and I don't think they breed in aquaria, or if they did, my wrasses were faster at eating them than the crabs were breeding.
And thanks for the comment I believe you have a colony from the same lienage in your tank (I got this one from CM). The color is stunning and growth is ridiculous. I'll have to frag it again, otherwise it'll overtake all the corals surrounding it, several of which are frags I got from you which are becoming nice little colonies