Fuma didn't hurt or help, the game doesnt factor into points.
Received 17 for the loss to Heritage, had they beaten Heritage would have been 36. As things sat at the end of the season, Appomattox was 14 points behind Radford (actually a little less because of the 9 games, 14 would have passed them). That is 7 more wins by defeated opponents. That is a fair amount.
Or if you want to use Goochland as an example, just sliding them into FUMA spot, with a loss to Goochland the Raiders would have ended at 249 or 24.9. Beating Goochland, 269 or 26.9, still in 3rd.