You don't have to remove those, Chris. I'd let them alone for now and see what they do. They may just be new growths on the main plant.
When a Phal makes a keiki on a flower stem, you usually will wait until it has roots a couple of inches long, then cut the stem below the keiki and pot or mount it.
Still a lot of red on those plants, and a lot of hard water deposits too. I'd advise you take a soft cloth or damp paper towel and try wiping some of that white crusty stuff off the leaves. It could be clogging up the leaf pores (stoma).
It's very encouraging that you've got new growths, though!
