erock, check out this link. This was a reply to some one who previously asked the same question.
Phal with center bloom.
As you will see a keiki on the terminal spike will, in all likelyhood, give you a plant that will have the same habit of sending a spike from the crown. If you cut the spike totally off you can hope for a basal keiki coming from further down on the plant stem (where your leaves are).
It's great that the company is sending you a replacement, not every one would.
GL with your plant.
Judi