In perusing Twitter last night... the internal "stories" are now coming out of the woodwork regarding how bad Frost was. I have no idea which, if any, of these stories are legit. But, I do recall hearing the "drinks a lot and shows up late to practice" rumor as early as last year.
A particularly specific one that I read last night was the golf team had complained because Frost and his buddies would dominate the golf simulator on a regular basis. Other rumors about playing video games all the time, late for practice a lot, more drinking rumors, too hung over to meet with recruits, etc.
If even half of these rumors are true, Nebraska will be immediately better even with an interim coach.