What about their other 3 losses against BCS opponents away?
VT's weak spot is their D at this point but they have had great defenses over the last several years, and they know how to rebuild.
Boise State, on the other hand, hasn't fared so well against defending against the run and VT has a couple of great rushers. Though Boise State's offense is explosive and they have typically outdone their weakness in defending against the run.
As for playing away from home, Boise State is no stranger to winning away, even at tough places.
Tough one to call. I could see it going either way...