I think Houston had an injury.
I'll be surprised if Dunlap doesn't return - he's not very good, but he's experienced, and if he returns he's a starter next to Dexter next year (unless Carter or Campbell return, for some reason). Not sure why Campbell only played 27 snaps, but I doubt it was disciplinary. Humphries is the big disappointment, and a big reason why this DL next year is going to take a big step back (he's the only heavy DL signed/still here over the first two classes). Dexter will be fine after he gets a year in the S&C program, I think Lee comes back strong. Rumors of Goods wanting to transfer, which is crazy because of the depth chart.
I've harped on this before, but not blowing out these last three opponents did a lot of harm to this team - lack of development for the younger guys, lack of reps for our back up QB, lost opportunities to mix up the OL rotation, and an opportunity to get the younger players who are buried on the depth chart a few snaps to keep them happy (like Goods, Hopper, Lee, Princely, Tarquin, Lingard, Bogle, and a few others - and not just experience, but just to get them out there to have fun at the end of a game). There's no excuse that our starting OLs played all 66 snaps, none. It's a poor job by the coaching staff.