I think I heard a WOB that gold compounding or even just regular gold feruchemy could heal the damage done to a spiritweb via Hemalurgy, so if Hoid can accelerate his healing abilities the way he can slow them down I can see him easily recovering from Nightblood.
Even if it was possible for a bond smith to move his spirit into an object, Hemalurgy damages your spirit web, making "spiritual adhesion" significantly more difficult, I would think.
Granted, you are the only known full mistborn/feruchemist, the Lord Ruler, 10 seconds before he is destroyed by Vin.
I wish that any negative bane granted to me would reflect onto the giver
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