Anxious:
I went back and glanced at your other posts to refresh my memory respecting your circumstances.
Hadenough gave you the best advice on an earlier post, but I will reiterate it here: go and get yourself a good lawyer. You need to find a law firm that no only deals in family law but also has someone onboard that practices exclusively in corporate law/taxation law.
I don't think many here can provide you with the advice you need. Heck, many (if not most of us) are dealing with spouses that cannot agree who is to pay for the pizza lunches or the new pair of shoes. See where I am going here?
As for you not knowing about the debt? Correct me if I am wrong, but I do believe you own 49% of this corporation; ignorance of the debt is not a defence that you can not fall back on. You need an experienced corporate lawyer pronto.
And remember, the corporation and your personal finances are separate entities (the corporation owns the debt, not the shareholders). If the corporation has accumulated that much debt and goes belly up, rarely can personal assets be liquidated to pay that debt; however, 'lifting of the corporate veil' has been known to happen. So, let me say it again: you need to get a lawyer.