I mean make a few wrinkles but for the most part do what you did against Wisconsin. The defense was dominant.I haven't looked closely at OSU's personnel, but against Ward I think I'd stick with the 4 man rush and try to keep him under pressure without opening running lanes. I don't know that a DE contain or an LB spy would be effective, because he can outrun either one.
Best bet is probably to keep him under pressure and confuse him with shifting coverages.