you may just be growing new nodules.. but they look like leather frags to me. I had a leather years ago that did that .. they eventually snipped themselves off and floated around the tank until they found a place to settle. your call as to what you want to do.
you can frag them now or wait and see what they do.
How do I frag these guys??
scissors/knife and cut.. They will fall off on their own though..
Then just rubberband or superglue to a rock,etc.. and all done..
expect a ton more.. devils hands can reproduce like crazy.
my LFS told me they will attach to them rock once they separate, is that true? I just don't want to have them floating around in my tank and getting lost.
sure...
I have probably 4 or 5 now just floating around my tank..
They will eventually attach to something..
But if you want to be in control of where they attach then take matters into your own hands..
You can do the cutting underwater. No worries.
FWIW I've got a small Toadstool frag right now that's no bigger than a small gumball. Let me see if I can get a good picture of it. It was about the size of a pea when I glued it to a piece of rubble.