This can be fixed. Raise the awareness of the lineman and FBs. Heck I raise the awareness of all of my players. If you don't wanna do that try maxing out all of the sliders, as it is clear they not only unlock animations and player abilities, they also increase player awareness. Max out all sliders except: Tackling (leave it at 50) HUM Pass Cov (100) CPU Pass Cov (0 because it seems to be reversed) INT (70) WR Catch (70). If the catches are too high reduce the WR Catch slider.
You will notice all of the players playing better and also more animations. You will see pulling guards cut blocking LBs on counter plays. You will see WRs holding blocks downfield. You will notice a big difference.
Try this on AA and Heisman.