Yes, but the defense could say he was there at the field when she was dumped but isn't the one who stabbed her. Or, someone told him were the body was or even showed him, but he didn't dump her there.
And, CR didn't confess to stabbing. The lawyer is sure to use that in his defense case.
Again, I think CR is the perp.
But the defense team will make the prosecutors prove every single detail. The defense lawyer is not going to say, "Well, CR lead LE to the body so guess he did it." No way. The defense lawyer will poke holes in everything and the prosecution is working right now to make sure no holes can be poked. The confession is not enough, imo.
I think it's worthwhile to think like the defense team - and to think like the prosecutors - now that we're over the shock of learning about what happened to Mollie. Otherwise, we'll have page after page of "he's such a monster!" Yeah he is, but we can take this discussion further now.
jmopinion