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When I go in Jorrvaskr, my active quest tells me to go down to the Jorrvaskr living quarters, and the quest arrow leads me to where Kodlak is usually sitting - but there is no one in the seat.
Kodlak is dead and everyone is "mourning" but when I speak to anyone in the companions they act as if nothing happened.
For example I have the option to train from them still and ask "Why did you join the companions?"
Will it still work for me if I start the quest to retrieve the helm of winterhold and run through driftshade refuge or use invisibility potions to get the helm without killing anyone? (I have a saved game right when I started Bloods Honor and before I have killed any witches).
Note: I have not cleared driftshade refuge and I have not completed the quest to find the helm of winterhold.