They have a shot but would have to play lights out for the last 4 games.
Right now you have 4 spots up for grabs after each BCS conference sends it champion. ND, Boise St, and a 2nd Big10 team have 3 locked up so far. That leaves one spot open for a 1 loss team from the other 5 BCS conferences. There would have to be a few upsets in the SEC and Pac10 for WVU to get the last spot IMO.
Best chance would be for UofL to lose to Rutgers and WVU beat Rutgers then be ranked the highest of any BigEast team to get the BCS Spot.
Other Scenario would be if ND drops another game and slides down the rankings or Boise loses.
Impossible no, but no likely at this point.