It's notable that last night was the team's 2nd worst defensive performance of the season, giving up 1.18 points per possession. It might be coincidence but maybe the fact that Calixte & Reynolds played just 23 minutes combined is a factor.
Also, the KSU game was the team's 3rd worst defensive performance of the season so maybe it has nothing to do with lineups at all & everything to do with just playing worse. Or, maybe it's about matchups -- playing consecutive games against teams w outstanding bigs & OU getting very little from McNeace.