I disagree. In general his statements have been fairly consistent with the events as they planed out.. Think about how you would respond to seeing what he saw 3 or 4 days later. Especially if it was something you had seen similarly before.
I don't think the fact that he has them arriving together is that big a deal... He saw them go to the house 11:50 ish and enter the back door at 12:00 ish... Wonder what they were doing on the back porch or yard for 10 minutes... Could that be the interval for which the AV drank 1 and a half mixed drinks... Surely she wasn't drinking while dancing for 4 or 10 minutes... And surely she wasn't drinking while in the BR being raped...
He sees the girls go to the car together and hears one of them say she forgot her shoe.... He hears the boys argue about the $100, I think that's important... And he verifies that something scared the boys off when he hears them leaving...
Although obviously in it for his 15 minutes, I give him fairly high marks for remembering quite a lot..
"And he verifies that something scared the boys off when he hears them leaving..."
Ummm..perhaps it was Kim yelling to the guys that she was calling the police?