Mustafas view on the world is so black and white! lol
If you could prove that the monies in the joint account were proceeds from the sale of a joint property and that your wife salted it all away, without your knowledge or consent, you may be able to prove theft - thats a criminal offience.
What you choose to do with that 'pearl of wisdom' is entirely up to you and would have repercussions, both financially and emotionally.
Personally, i'd go all the way and get a court order demanding the fair money or force the sale of the place, subject to terms of your impending divorce of course.
Good luck