Well it’s confirmed (by me anyway)! Hammer coral can and will self frag. It took about two months from the time I noticed it anyway. It started with what looked like a misshapen tentacle missing the “hammer” tip. Someone on the forum told me the hammer was fragging itself so I let it be. Today it dropped off by itself and I scooped it up. I thought that it was going to be all jelly like but that stalk actually has a sliver of skeleton like a vein going through it. I put it on a rock with some glue and there you go! A new baby hammer. It’d be nice if my torch did the same! It was completely open when I scooped it up so hopefully tomorrow I’ll get a better pic when the lights come back on!