Well its not 'his' claws. Its the bound incarnum that's digging in. So he never actually comes in contact. Just unbind the essentia, boom, the 'contaminated' limbs disappear. Rebinding produces fresh clean ones. It is a fine line and mainly not supposed to make a lot of sense to a rational person, but most people with a phobia are less than rational when it comes to that phobia.
Spatter? Eviscerating a foe is messy business. I've seen Kill Bill enough to know that that stuff sprays everywhere when you start hacking into people.
A beholder’s favorite foods include small live mammals, exotic mushrooms and other fungi, gnomes, beef, pork, colorful leafy vegetables, leaves, flower petals, insects, and birds.