Well, no PAC-12 team has won both of their road games in a back-to-back road swing. Oregon is a drastically different team at home than on the road and Arizona has been playing much better football lately (and its a rivalry game). I’d say that ASU winning both game isn’t “unthinkable”, but most certainly isn’t the most likely outcome.
As for Herbert, I thought it was reported that he is leaning on staying. Perhaps that has changed.