From the Richmond Times-Dispatch:

RADFORD, VA -- Radford University men's basketball coach Brad Greenberg has resigned according to RU officials in a posting on the school's official university athletics sight (sic). The move comes following RU suspending Greenberg for four games this past season, for violating NCAA rules.

Brad Greenberg was an assistant under his brother, Seth, at Virginia Tech from 2003-2007 and was a key factor in the Hokies' resurgence that culminated in a trip to the 2007 NCAA  Tournament. He took the Radford job after the 2006-07 season and led the Highlanders to the 2009 NCAA Tournament. 

Is it too late to get Brad back on the Virginia Tech staff? Possibly. The Hokies have an opening on the staff, but according to several reports it is likely to be filled by former Maryland assistant Robert Ehsan.

I have no idea if Brad would want to come back to Blacksburg or if Seth would want him back. What I do know is I liked the way our team played a lot better when Brad was on staff. My opinion is it's not a complete coincidence that we haven't made the NCAA Tournament since Brad left town.