Sounds like Alex Grinch is really shaking things up in Norman. OU's got the wrong personnel to run his schemes. He wants to play aggressive, penetrating 1-gap scheme (4-3 philosophy from a 3-4 look) up front. What he's got are big, slow space eaters recruited to command double teams and keep the LBs clean. With his love of slants, stems and other pre-snap movement I have to wonder if Gallimore will stroke out in the 3rd quarter running a pass rush stunt. The changes may be driving the exodus of DL.
Maybe Grinch deserve his own thread. When I looked into his record, the one thing that really stands out is 2017. His WSU defense was statistically #7 in opp pass efficiency. That did not comport with what I actually saw in a couple of their games, including the blowout bowl loss ot Michigan State. Digging a little deeper, the Pac-12 was dog crap in 2017: 1-8 bowl record was just the rotten cherry atop a putrid cake. Further excavation showed that the pass efficiency D rating was largely built on shutting down 2 horribad teams: 3-8 G5 (MWC) Nevada and FCS Montana State. Passer ratings for those 2 games were 62 and 44 QBR respectively. Pass efficiency D was approx #50 nationally when those game are excluded (against a terrible Pac-12). 2018 results from Columbus obviously were not inspiring.