Well, kinda hard to do that when they kidnap you and keep you in their dungeon.
Marc's method can be learned as simple as one, two, three.
Mastering it will take longer, but the method itself is not complex.
Ive used it myself and will use it from now on.
http://marcstevens.net
The skypechat is frankrizzo3. There you can ask questions in real time.
It boils down to what you said, what evidence can they present that you surrendered to their jurisdiction.
I know marc and dean have history.