Everyone is allowed their own interpenetration, respectfully I disagree with some of these interpretations . IMHO Klein is working closely with LE and the FBI, he isn't some first time clown on this case. He isn't releasing information that is false or supposed to be secret. He is working to find Deorr, he has made that his mission, LE is working on on a couple of additional things including prosecuting whoever harmed Deorr.
He is going to bring in the dogs and LE knows that, since this is a couple of weeks away and dependent on the weather it stands to reason he won't give an exact date. Klein is being careful to give respect to LE and is saying he will do whatever they direct as he should. Think of a good athlete saying I'm going to do whatever coach tells me to help the team win. The sheriff and FBI are probably ecstatic he is going to bring in a high powered team of canines not on their budget. Klein will defer to them as they are the officials and he is the private sector but once again they are all on the same page or they would tell him get away from our crime scene or we will arrest you for tampering.
In regards to murder/accident perhaps I'm just simple, but I think I understand where "they" are coming from. It could be undetermined at this time, I laid out a possible theory a thread or 2 back. What if they have proof of a firearm discharge and some small blood splatter? The toddler could have shot himself accidentally or been executed, that would be hard to prove if the cooperating witness didn't see the actual gun fire and the body is not yet found. There are literally a hundred things that could go either direction and I respect Klein and the Sheriff for not trying to pin murder on anyone until they are certain. Klein and the sheriff would prefer to not have to walk back any allegations, and frankly Klein has given us plenty to chew on. I'm sure they have more up their sleeves but until they have a body and some arrests it's for them to know and us to speculate on.
In regards to VDK being in his truck to charge his phone, that is a new idea as far as I'm aware. Personally I think he was dropping off evidence or a body, but perhaps his defense lawyer will read that idea and give it a try in court. VDK obviously feels it is very important for everyone to know he was in his truck so I'm sure the truck will be involved heavily when judgement day comes.