They would play there isn't some duck the PAC conspiracy with the SEC in fact Auburn has big problems getting quality BCS opponents I can't image they would turn any PAC offer down if schedules could be coordinated.
Now I can tell you that multiple B1G team have turned Auburn down over the years. Of course the B1G fans would say "play us in November when it's cold you can't hack it" when the truth is they back load their conference schedule and in fact can't play then.
I think one reason Bama doesn't go out west is recruiting purposes. The places we recruit big time are the places we play at and the games are neutral sites (Atlanta and Dallas). Its definitely not because Bama is scared to play any of the Pac teams, we just don't recruit out there much. And lets be honest, 01-02 Bama is way different than 2013 Bama.
You don't really think that has anything to do with it do you?
Why would a SECer try to recruit West Coast? More talent in the southeast/Texas than California.