Agree re. Greer. He was a steadying influence while Boo couldn't do anything positive. Young also needs more minutes unless Nance is having his occasional assertive game.
It's one thing to be a "steadying influence," it's another to have the ability to get the rest of the guys around you out of a massive slump. Greer may not make bad mistakes but he's also not a Big Ten level playmaker.
When things started caving in during the second half, there was simply no one on NU willing to take the big shot, nor have the patience to search for a high percentage look, nor drive and draw a foul. It was all bad midrange jumpers or off-balance floaters.