Phal questions/keiki/Leaning orchid, more

[ginnyr]

Hi - My 1st question is about a keiki (SP?). I have one on a white Phal which now has 3 leaves, a root about 1" long and another which is emerging. When and how do I separate it from the mother plant? It is growing on the spike from the last flowering.
2nd is about another Phal which is very healthy and is right now throwing another spike but is practically on its side in the pot. It has large, deep green, strong, healthy leaves and I think the weight of those leaves is pulling it down. How can I get it upright again?
Last, another of my Phals has a brand new plantlet emerging next to the original. Do I remove it from the pot and separate it?

Thanks for your help!