So here's the upshot.

I called STBXW to tell her I was on the way to get the boys.

She said - We don't need to make any changes to the agreement, and I will just trust you.

I think to some degree, that's what I wanted, after all this crap with the negoations - is to hear her say that. Maybe I didn't handle it in the best way, but I am glad that I stuck to my guns. Not because the actual point was important (because it really wasn't in the grand scheme of things), but because of all the other things; I should be able to say what I want without fear of "going to court"; some element of normalcy; some element of trust.