The crowd went absolutely ballistic when Fresno was down towards the NU 15-ish yard line, Crick broke through the line and was heading after Carr, and the O Lineman had him by the neck from behind. The Referee had a great view of the holding, but didn't call it. Crick just threw his arms up in the air and the whole crowd was booing.
There was another VERY blatant holding call later on, that they actually called, but the flag was literally stuck in the Ref's pocket. We were laughing because it took him a while to dig it out.