NoHope,
I've just finished reading your whole thread. WOW! I've seen nutty before, but she's pretty close to taking the cake. (Check out http://www.survivinginfidelity.com/forums.asp?tid=583529&HL=52323 for the one that really takes the cake.)
With that said, I would not put anything past her at this point. Something with her went off the rails fast and hard. If I'm doing the math right, you guys have been together since you were in your teens? So basically most of your lives have been spent together? Has she EVER exhibited behavior like this before? Whoever it is you've been with all these years, that person is gone.
She has proven capable of anything at this point. DO NOT get caught in a he said/she said situation because as the husband, you will lose. Your only defense right now is the VAR, GoPro and the 180 hard and fast. You will need evidence to rebut her claims.
You have three things in your favor, as I see it. She's around the bend. The coaching from the OM was terrible as they obviously don't have enough brain between them. Your attorney seems to know wtf they are doing. You are paying good money for that advice and work. Let them do the lifting for you and focus on the kids. Like wrestling with a pig, you need to realize that your WW enjoys being in the mud. Take the high road, it will serve you better in the long run.
Keep us posted.