I’ve done it, my tabling acros are just too wide to properly use bone cutters. The trick is to have someone hold the rock down while you chisel the colony so it doesn’t shake your aquascapeI've seen threads where ppl do this and it works pretty well without moving the rock or shattering the colony. With a sharp like ng chisel, one good pop with a hammer and it should shear the single branch with a little bit of rubble created on either side.
I've never done though.