Not to get too crazy, but Duke actually can still win the division. Not likely with Miami next week but should they win out they could do it.
Not sure the tiebreakers but unless they end up tied with Georgia Tech head to head, they'd have any head to head tiebreakers over Miami or VT. GT still goes to Clemson so that will likely be their 3rd ACC loss, and VT likely loses to Miami tonight.
Again, not likely to happen because I doubt they beat Miami, but that would be quite a story if they made the ACC Championship. Of course they'd be destroyed by FSU but still.