You have the right to file a partition action unless the TIC contract agrees to binding arbitration as an alternative. Or, you can always seek a restraining order or preliminary injunction to stop the harassment, etc... against the co-owner or the roomate. While the roomate may not have ownership or formal tenant rights, as a matter of law is a tenant of sorts as is anyone who stays at house for a period of time gains rights to possesion under landlord/tenant law. Other than a civil harassment order, you will need an attorney to file a complaint to obtain any of the other relief suggested. Please contact me for further assistance. Barron Law Corporation, 1750 Montgomery, San Francisco 94111. [email protected]
http://www.lawbarron.net