To be fair, lets break this play down like a coach would:
1) LBs have too much depth at 5+ yards
2)We have double teams across the board up front, and our LBs arent in a position to fill their gaps (note that the DL does their job in a 3 front scheme by eating up blocks from the OL, freeing the LBs up... not that it matters, because theyre too deep from the start).
3) Our backside lineback gets up field instead of closing down the backside for contain. Thats right where the play ends up... its not a frontside D issue--its backside.
4) Neither ILB attacks the line of scrimmage at any time during this example. Thats just poor form and not worthy of a DI scholly.
5) The DL actually does a very good job setting the line against the double teams. Less than a yard of retreat, which is acceptable in a double team situation. In actuality we want to gain ground not give it, but if worst case is a yard loss at the LOS, it is acceptable.
So in reading the above, is the OL still the issue? Or does the defense just have fundamental coaching (programming) issues?