There's no way you should pay for part of the pool cleaning if you aren't even living there.
My WAW wants off our joint phone plan too; but I see that as a reason to hide who she is talking to. I just let her put it in her own name and that way I can't see any of it. Ignorance is bliss. I see all the steps of taking yourself off the joint payments as further separating. As the LBS, I don't like it when my wife does that; but she is doing what she wants and I am not stopping her.
I would refrain from disconnecting more; but I would really focus on yourself and GAL! I just keep envisioning myself getting back together and acting "as if". In the meantime, I concentrate on doing things for me and my children. I am not saying it is easy; but I just put one foot in front of the other.