Well, there is a difference between new growth and reproducing. Branching corals like Frogspawns, Hammers and Torches will grow by creating new heads(attached to itself) and dividing heads, 1 head splits into 2, then 2 to 4 etc. What my coral is now doing is reproducing, that is making a whole new coral. Its not that they are supposed to do it, its just cool when they do. I have had this coral in my tank for about 2.5 years. I think what helps get the coral to reproduce is #1 - time, and #2 leaving it alone, (not moving it). Also, I noticed the 2 heads that dropped "babies" were on the "bottom underside" of the coral. These heads were shadowed by the top heads, not receiving as much light as the rest of the coral.
I checked this morning and there is only a tiny thread left. I would think by tonight the second baby will be complete.