Watching the video, boy did EJ get smacked around. Now, I really, really like him as a guy, but with all of his strength, he seems to get off the ball too slow way too often. Plus, he sometimes doesn't seem to have that killer fire that Ian is showing right now. If you watch, Kapron is facing a similar stack block on the other side and is able to split it, while Ethan just gets hammered.
Maybe he needs to bulk up a little bit, I don't know but he is certainly weak against the run right now. On the other hand, if you watch the play where Stanford went unbalanced (with only the LG on the left side) near the goal line, Hafis himself basically stopped the play. To me, he could be an excellent 3-4 DE to put alongside Ian right now - especially on short yardage situations. Sure he does not have the athleticism Ethan or KLM have, but look at Bama's DE Marcell Dareus - he's playing at 305.
Just a thought. Also, as good as Manti and Carlo are playing, I think that Ian is making our ILBs look even better, while EJ and KLM right now are making our OLBs look worse.