Brucexie,
Do you own your mining operation, or are you running it for someone else?
If you own your mining operation then why are you so worried about 200BTC? It is a very small amount of the total you have mined, and are able to mine.
If you are managing a mining operation for someone else, are they really pisssed off at you for getting caught?
Edited to add:
Something else just crossed my mind, and I just thought I'd put this out there.
The "You can't prove that I did it" defense seems to me like the exact thing someone would come up with while planning such a scheme.
#1 - I'm not going to get caught.
#2 - If I am caught they can't prove anything.
#3 - If they can't prove that I did it, then I will not get in trouble.
This is why he is sticking to the "you can't prove anything" defense. This was his logic from the beginning. and he has no other option but to stick with his plan, no matter how weak his defense is.