1). Keiki's can be left on their parent plant, if you want to. You can also remove it and plant it up on its own, when it has more roots. Totally up to you.
2). A distorted spike can be caused by any number of means. I suspect, however, since your plant's done so well, that it's just distorted from growing out of the base at an odd angle. An example: I have a first bloom seedling of Phal. leuddemaniana that has sent its two flowered, tiny little bloom spike directly into the S/H medium. I've managed to get it to grow on top of the medium, and the flowers are fine. Sometimes orchids do crazy things - it's not always something we've done wrong.
3). Phal hybrids' leaf styles are determined in part by their parentage. Here's a bit of an explanation: Most Phalaenopsis plants have floppy to slightly stiff leaves, that can bend or distort as they get older and more leaves grow on top of them. Doritis - which are in the Phalaenopsis family, and cross with them to make Doritaenopsis - have multiple, very stiff, upright leaves. Doritaenopsis tend to have the larger leaves of their Phalaenopsis parent, combined with the multiple, upright, stiffer leaves of their Doritis parent. Even in the pure Phalaenopsis genus, there are many, many different kinds of leaves, so when you start hybridizing and hybridizing, and get some of these complex hybrids like you see in grocery and hardware stores, you have their entire parentage to take into account.
4). Pretty much see #3. Individual plant culture can also play a role in affecting "funky" leaves, but other than looking funny, they cause no real problems.
-Tim
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