House Rules for divine intervention
Another possibility is to just create house rules that will go along these lines:


Remove the card from the deck before play, and explain new players why.
Extend the amount of levels needed to win ie. 15-20 (this will only delay, but may help prevent surprise wins.)


Personally, I'd keep it! Although it sucks to lose to it, just deal with it and maybe luck will sway in your favor next game.

I've lost to it before, but because of Munchkin's randomness, I've come back from level 5 to win while 4 other players at level 9 were fighting each other and preventing each other from killing the winning monster.