Yeah, they completely lost it after the Oregon game. People here have covered a lot of the problems, but I think another was how after the aggrivating lost to Oregon State they went to play an unusually good playing UCLA and also blew that at the last second. The next week they went to Arizona state and further blew it. All of this translated into a complete lack of confidence leading the team to completely implode.
It's a very very disappointing season, easily the most out of any college team this year. Just look at the sort of talent they have. Hawkins and Jackson are considered two of the best recievers in the country and their talents were completely wasted. Desean Jackson will probably be one of the top 10 guys taken in the draft next year. If you don't believe me, look at some of the clips from the Tennessee and Oregon games.
I think playcalling is justifiably the main problem as everyone here is saying. I remember when I was at the UCLA game after a quarter or two I could even hear the UCLA fans saying "ok they'll run the first 3 plays and throw a circus catch to desean." It was really really predictable and conservative. Something that completely works against the explosive offense you should run when you have such awesome playmakers.
And yeah, Longshore too. The only close game he ever won was against Oregon. In 2006 when they were on a roll and beating teams by 20 most games he was never put in a situation of pressure, allowing them to do so well. Come many of the close games this year, he completely breaks down, tosses INT's, and always loses it. There's no point in having a QB if he isn't going to be clutch and can only handle games within his control.