The most interesting part of the article for me was:
"Defensive coordinator Luke Fickell, the beleaguered interim head coach a year ago during a woeful 6-7 season, hinted at two problems.
First, the Buckeyes lack a distinct leader of the defense along the lines of former players such as James Laurinaitis, A.J. Hawk and Matt Wilhelm. They were middle linebackers who called signals, made plays and were savvy enough to cover up mistakes by others. If a quarterback slipped containment, they could close the deal by bringing him down. If a back found a hole and appeared to have daylight, they might rush to the spot and slow him down until help arrived."
Is that what the problem boil down to at the core? A mental problem. That there is no one defense that is mentally prepared to lead and call out plays? Someone who knows the weaknesses of their fellow teammates and will help compensate for it. It would make sense why Boren was moved to LB last week if Urban was looking to install some more leadership on the defense.