At this point, OSU needs to cheer for Indiana and Northwestern to win out. If OSU can‘t qualify for the Big 10 title game, I don’t think they have a chance to get into the playoffs unless Indiana proves themselves to be a good team and the Big 10 looks like a good conference in the end.
I feel like a Big 10 Title game with a 6-2 Indiana vs a 6-2 Iowa or Northwestern wouldn’t look that great to the committee.
If Indiana loses another game or two and drops out of the top 20, I think it certainly raises a lot of doubts in the committees mind as to whether or not you can include a 6-0 OSU team.