Here is a little snippet from the blog you pasted a link to ......
"he clearly said,three times,that all his family were dead.So why did he later tell a detective that he only saw his mother and father?He couldn't explain to that detective why he said on the phone that all his family were dead when he only saw his mother and father.Did the jury believe that it might have been delayed shock that made him forget he had seen all his family as he was to remember later.But then if it was shock then why was he able to remember seeing his mother and father?I wonder what the jury thought about that"
Now, doesn't that sound VERY familiar? You don't believe that David (who would have been in extreme shock) was confused about how many of his family were dead but you're willing to accept that a professional group of police officers were confused and incapable of relaying and documenting the correct information? And even going so far as to mistake Neville for a woman?