Okay, is it a bloated sweeper tenticle that broke off? I am not sure frogspawns can do that, I know hammers can. If so the likelyhood of it forming a new colony is very unlikely, however not disproven. If it is one of the branches that has fragged off, you should be able to stick it down and watch it go.
Here's to swimmin with bowlegged women.
Reef with 30G Sump/Fuge Combo
-30G LTAnemonarium with mated porcelain crabs, 10 sexy shrimp, and 2 pink skunks all tied into the other 135G in my system.