Sounds to me like you are explaining a basal keiki, which does happen on Phals. When it matures it will give you quite a flower show. Or you cn remove it from the mother plant very carefully after it has roots that are about 2 to 3 inches long. I personally would leave it be. I have one that when it bloomed there were 2 spikes on the mother plant and 2 spikes on the baby, very impressive.