I just don't see OU going to SEC as it would be very very political to move there without Okie st..and SEC has policy to not have 2 teams in same state not to mention it would make no sense to grab okie st when they would have OU.
Hate to break it to you, but the SEC has no such policy prohibiting 2 schools from one state: Mississippi & Mississippi State and Alabama & Auburn. So OU & OSU are definitely in play for joining the SEC. Also Texas and OU are not bound to be in the same conference. They played each year during the Texas state fair LONG before Texas joined the Big12.