But cursed wolves should never ever be in a game. It means that in some cases through no fault of their own one pack is destined to lose even though they might play a perfect game. They could have all their members sold out to the other pack on day 1 potentially. It goes a little beyond "a slight hint of imbalanced" but yeah it should just be marked as baddies win for the sake of simplicity.
The cursed wolf caused his entire pack to jump to the other pack, so this is a little different from the scenario you outlined.
Still seriously imbalancing, but we already complained about that at the time. It's a baddie win.