Mine didn't broadcast heads, it just had little itty bitty ones along the skeleton that got isolated as the main polyp grow higher and took its tissue with it.
here is a pic now, 6 months ago they were the size of pinheads. I lost the coral in a crash and low and behold the baby buds survived didn't even know they were there till the big heads died. I imagine as the large polyps grew and detached from the tiny buds it would have to severe the tissue as it does when a big head splits. It appears this "may" be the case here. It looks like a small polyp formed on the skeleton in the ops pic and the tissue is stretching as it seperates.