Seperation, its one big roller coaster of emotions. I walked away about 18 months ago and everything James said is true.
Dont argue or criticise their mum in front of them either.
You WILL also find out who your REAL friends are too. Im in the same position regarding the finances but moved back to my parents and gave the ex the option to buy me out or sell up and split the equity when she can afford it. Id rather it wasnt sold as I dont want the kids uprooted.
I met someone about a year ago and Iv never been happier in a relationship than I am now.