INDIANAPOLIS (AP) — Big 12 leaders held a call without Texas and Oklahoma on Thursday to discuss how to keep the league’s flagship schools from bolting to the Southeastern Conference — and contingency plans to survive without them. The Big 12 put out a statement that revealed few details, but made clear the eight members in danger of being left behind want the Longhorns and Sooners to stay put. And that leaving could be costly for Texas and Oklahoma. The person familiar with the call said Commissioner Bob Bowlsby and school officials discussed possible options for persuading Texas and Oklahoma to remain in the Big 12 and potential ways to keep the conference going if they leave.