So I started a game with the Drengin and made a few modifications to their initial setup, and renamed them the Silly. It was fun and everything, but now that game's over and I want to play as the unmodified Drengin. The Drengin au naturel, as it were. There's just one problem: I can't. See, whenever I go to the "New Game" screen, the Drengin aren't called the Drengin anymore, they're called the Silly. Much worse, I can't get the original Drengin racial stats back (not enough points, and there's no possible way to get a +25% soldiering bonus).
Is there some way to hit the racial reset button and return all races to their default loadout of abilities, techs, names, etc?