Didn't they lose their defensive coordinator, Bud Foster?
Losing Mike Vick and Marcus not turning into anything worthwhile has obviously hurt the Hokies. Their defense hasn't been as good as it was in the late-90's and other teams have caught on to their special teams dominance.
They'll be a solid team most seasons and maybe have a national championship run every decade or so. Beamer will finally move on and they'll be back to being VPI. 1999 will never be topped in Hokie-land.