Hi copper head,
Looks like you had a great time there love the spoon very nice, in answer to your question if you dried your spoon before you finished it, the fungus is dormant in the wood. That means that, while not dead, it is no longer reproducing or producing spores. Any current spores in your wood will be sealed in by your finish. There is absolutely nothing wrong with using spalted wood for food items, as long as it is properly dried and sealed.
By the way, always wear a decent dust mask whilst working wood especially sanding it.
Hope this helps.
Nice pictures thanks for sharing. Deer (at least in Canada) make scrapes when they mark their territory almost always under the edge of a tree or bush. The males paw the ground and pee on it to leave sent behind. The hair looks like its from some kind of deer to me, deer hair is usually much coarser and shed easier than a "fur bearer" such as badger.
Thanks both for the info !