Sorry, online public records information for St Joseph County have not been updated since July 2008 in my MLS. You could go to the township or city where the home is located and inquire at the clerks office. Right now is not a good time, everyone will be fighting their taxes.
If the home was sold at sheriff auction, the owners will have between 180 and 365 days to redeem the property depending upon circumstances and acreage. After that time, it will be cleaned out and placed on the market usually through a real estate company.
A local Buyer's Agent (notice the term) would be able to represent your best interests and may have the banks address. Good luck.