dio could have ordered the hit from the joint. he was very powerful inside prison. his brothers did his work for him when he was away. being it was his uncle he had to know the reason. im sure dio oked it. dioguardi was in prison so often if any body wanted to hit him, good judgement would dictate leave him be, he will be back in the joint soon enough. the government was on his case constandly. because he beat the rap when he was charged with the blinding victor riesel they never let the guy alone.