Terribly sorry to hear of the division between yourself and your co-founder/partner. I've experienced an ugly split with a partner and it's not a fun time. I'm not certain if you have a corporate attorney or not but it would be wise for the both of you to have a chat with him/her. My concern for you would be the debt (specifically to the government). As 50% owner of the firm, you are "on the hook," so to speak, and with the growing dissension between yourself and your partner, I'm inclined to believe that's a sour situation that could very quickly turn sour. If you truly want out, and this is just my opinion, I would check your Buy/Sell Agreement and strongly consider selling back your shares of the firm. Please do yourself a favor and speak with your attorney before this gets ugly.