i recently had a bristle/fire worm in my tank that was around 4-5 inches long. i removed it and after playing with it some put it in my fuge/sump. i i.d. it as a hawain orange worm. anyway i just found the front halr of it in my dt again. it oviuosly got sucked into my return and chopped in half. my question is can the back half form a new head and reak havock on my corals ect. ?