I think the point that most people are missing is that, if we beat VT then, as you said lose to ku or ou or Mizzou we are NOT back... BUT, by the same token, if we beat those 3 but lose to VT then we are NOT back.
VT is not the turning point, its the entry into the corner. It does not win the race for us, it sets us up to be in position to win the race.
In my honest opinion, we are not back unless we beat (convincingly) 3 out of these 4 teams this year. And by convincingly, I don't mean by 3 td's, I mean we don't win because of some fluke or bad call, etc.
My reasoning for this is that VT is looking like this may be a down year if they lose to us, Mizzou is still undecided, KU will be strong but I believe their magic is over, and OU has already had a huge disappointment in their season.