i bump into mine a lot with my hand (i just use a razor blade to clean my front glass) and IME, it just makes things worse. it seems that when i break off one growth tip, 2 or 3 more grow back in its place. not thats a bad thing, just i dont want to move this coral, and i really would like to have it grow into a huge colony. its already as big as my whole hand stretched out.
and i wouldnt suggest moving your colony. you shouldnt have trouble selling frags of that though. im sure everybody including myself would be all over them.