Unfiltered is pretty much every homebrew unless you actually use a filter. Usually this is to remove yeast. I've never boiled grains, but I imagine you will have some pretty odd flavors. I never advise dumping a beer, so wait it out in the primary and when it stops fermenting, take a sip. If it's unbearable, toss it. If it's only slightly bad, bottle it and let it sit. It might work out, but I doubt it. Boiling grains causes excess tannins to be released in your beer.... not good.