Child That Shot Mother: Family Not Buying It

Thanks to the volunteer who transcribed the 911 call, as  Statement Analysis highlighted sensitivity indicators in the father's statement to the 911 operator. See prior analysis here as deception is indicated: http://seamusoriley.blogspot.com/2011/04/deception-detected-in-911-call-of.htmlHow did this happen?  Why the need to be deceptive? Did he shoot Julia and simply blame his son?Did he coach