Mine has spawned a couple of times as well, only in the past year or so and I have had the colony for about 3-4 years. NO idea what I did to make it so happy. Now I have little colonies all over so I ended up fragging off the main colony and giving it away. Its kind of neat the places they've picked to start up new colonies, places I could never manage to attach a coral to so I've freed up the spot the original colony was in for something else
