That's the secret. Old family strategy, getting killed and blocking off all the pipes just after Godbrand's eaten pig blood.

[ REST IN FUCKIN PIECES GODBRAND. It's comforting, to know that whatever he becomes at the end of this, he'll have a place to go. He didn't even have that when he was entirely human. ]

Depends entirely what shape you are. I don't think I can carry the wolf right now.