Written by DCist contributor Brett Gellman Well, who saw that coming? The Terrapins (12-7, 2-2 ACC) stunned the nation last Saturday by defeating the (now former) top team in the country, North Carolina, 82-80 in an instant classic in front of a nationally televised audience. And this was at The Dean Dome, no less. Gary Williams orchestrated one of his finest coaching jobs, as the future Hall of Famer guided his team to the program’s…