It was a rage killing after an all night elder visit to talk about marital issues. He was probably planning on doing it sometime in the future, however after being confronted by his wife in front of another elder, up all night and probably got into a fight once the elder left, he most likely lost it and snapped.
There may not have been any physical evidence, however the circumstantial evidence was to massive for him to over come.
Kelle (not Kelly) was a blue blood witness. Mother & Father in the missionary work when younger. Father gave talks at conventions, dramas, headed up quick build committee, etc. Uncle who was a CO.
I think his family is in denial.