Great stuff in there on identifying the pursuer-distancer dynamic. I think that's one of the most important things for you to understand and really gets to the nub of the philosphy behind GAL in DBing. DBing is about behaviours - I can see you like to know "why?".
On the job issue - I have a slightly different take. If you want to change your job, because you want more of a challenge, or to shake up your career - then you should absolutely do it. BUT if you want a new job simply as a tactic to demonstrate your 180s be very careful.
I'm a bit unbalanced in the career part of my life (I say work is my hobby!!), but my work and my ability to shine in it while my personal life was in turmoil was a really important part of my healing. I did change jobs - hell, I changed careers and it was absolutely the best thing that ever happened to me - but I did it because changing careers was something I'd been putting off because I worried that such big changes would affect our family when we were together.
You say you love your job and your reason that you might want to change was so that you would have to travel less and be more available for your son.
Two things
1. If you LOVE your job, make sure any other job you consider you will LOVE just as much or more
2. Your son is growing up - and his dad is 10 mins away. You being away for a few days a month may end up being good for you - and for them - as you become a little more mysterious and get on with what has to be done.
Back - you are doing so well. I love how you have already made yourself the project and you are learning and understanding things that you've never had to consider before. Keep at it girl - you're a gem.