Hi Bro, it is certainly interesting, but not uncommon. I ever experienced this myself. But the 'budding' died before it grew out. Others were lost inside the rocks due to water flow. This phenomenon also includes hammer and frogspawn corals, though the latter is harder to get it to bud. Mine detached on its own, maybe due to strong flow or fish disturbance.
Hope you succeed in propagating lots of torches.