momtario, It sounds like you are much more at peace with your choice a month later. YAY!
If I do return to the marriage at this point, my children will be removed from the home.
Please consider--even if this is true, you ARE making a choice. I think this choice is so lopsided for you that you aren't even considering the path where you lose your children... .but you still are choosing.
Knowing that you do have a choice, and that you are making the right one this time is a huge help going forward.