not that i've heard of. obviously, i don't have any inside info on the case, but just going off his behavior, i think his motive was to be cruel towards his wife. that's why he he went out of his way to spare his life, and to execute all 3 kids in front of her. one of his sons ran away into some woods, chad dragged him back and shot him in front of his wife so she would have to witness him dying. he wanted her to suffer for wronging him.
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