After months of protesting Columbia’s smoking ordinance and spearheading a failed campaign to have it repealed, Joel Thiel, co-owner of Otto’s Corner Bar & Grill, said he decided this week to close doors for good. Julia Robinson photos Above, Brett Wisman, left, and Kristal Allen smoke cigarettes after dinner last night at Otto’s Corner Bar & Grill in downtown Columbia. Below, Otto’s co-owner Joel Thiel works yesterday in the restaurant. Otto’s will close next week, a move Thiel blamed on the city’s smoking ban. He said sales have been down 30 percent since the ban took effect in January. "Our...