If it can be scripted that fragarach can't be transferred with humble and if he dies, him and fragarach disappear and no reward. The evil scenario that requires the party to obtain fragarach would have to be modified also. In a regulation game no one but thrommel should have fragarach. The exploits need to end and if you want to cheat, use the console. At the risk of corrupting your game, of course. The console is great and you can do some neat things. It's fun to experiment with and it's there if you get desperate.