I finally got caught up and listened to last night's radio show.
I personally think the whole mediation thing is a waste of time. Why? Well this is a criminal case. Dylan doesn't appear to have run away and therefore if he is missing it's not because he wanted to go missing. It means he met with some harm of some kind. This is a police matter and it's up to LE and other detectives to investigate to find out what happened and see where the evidence leads them.
The fact that Elaine and Mark don't speak, don't communicate (well or at all) and don't work together is beside the point. Mark either had something to do with Dylan's disappearance or he didn't. Dylan was last seen alive with Mark. LE has to rule Mark in or out. They generally won't make such pronouncements due to legal reasons but it's clear they suspect something happened. Whether it did and whether LE can prove it did remains to be seen. If Mark is involved or did something to Dylan, he,s not going to fess up to his ex-wife either in mediation or anywhere else. So them "talking" isn't going to change anything. Mark has to be open and honest with LE. If he hasn't yet, he should take a polygraph. Mark Klaas would tell him this. Those with nothing to hide, hide nothing.
A tracking dog losing a scent 50 ft from the last known place, and that place is the house, is highly suspicious. It means Dylan did not walk away; he got into or was put into a vehicle and that vehicle was very close to his house.
A kid "going fishing" or being outside would not take chargers with him (cell phone, iPod, etc). Where would he plug those things in? Those items were removed, along with his backpack. I call that hinky.
This case reminds me of the Kyron Horman case. One custodial parent last seen with the victim and then poof. Mediators are not needed, what's needed is more search resources (like TX Equisearch), more police investigation, help from others like the FBI.