My W has thrown out that load of bull at me as well. I think you have every right to fight these charges. They are too serious to leave alone.
In fact, my DB coach said this morning that she agreed w/ my deposing my W on the legal record to refute these and other false charges coming from her. You are in your rights to do this, but you need to be careful w/ how you approach your W w/ your side.
I'm not sure how to tell you to handle things. If you attack, it will get ugly and she'll strike back. That definitely won't help your DBing efforts. On the other hand, doing nothing tells the world that your W's accusations are correct.
My only advice would be to call and talk it over w/ a DB coach. They are REALLY good at what they do and they can tell you EXACTLY how to confront your W on this in the most productive way. Others may have had to do what you're planning on doing and can give you some advice to follow.
As for me, since I'm embroiled in a legal affair, I decided to allow the legal process to work and use it to dispute my W's claims. I'm not sure what I'd do if I wasn't in the middle of a divorce.