I realize we have to take NE articles with a huge slab of salt, but you may be on to a possibility here that we can certainly speculate on within rational parameters.
If DC had a private meeting with KC in late July and she gave him info on locating Caylee's remains, perhaps DC created the daisy chain by contacting a civil servant with the info as a "reliable rumor" and plying him with reward promises if it was done before KC was bonded out. That would certainly explain the RK connection and his sense of urgency - he may have been innocently acting on a tip he thought would net out well.
If DC acted alone at that point because KC was advised by her attorney not to compromise him ethically by saying too much, then JB might not have figured things out until DC and Hoover were busted filming the area.
What this could address, however, is the inexplicable way the defense has suddenly gone nuclear on defaming RK's character (when they clearly had over a year to do so), so that if DC decided to cop to the truth, it would not be easily corroborated by a credible RK. AL suddenly playing dirty with the person who located the body may have had pre-emptive overtones that were meant to address a plea deal DC may have taken.
It could also explain why that not only NE's "source" wants to stay quiet, but why the state may have asked for the ex parte to frame the reason they want new information from a witness kept out of the public eye and to insure this person is not harassed. Making sure that JS knows ahead of time might also protect this witness (if it is DC) from the sleazy shenanigans the defense pulled on RK.
There are so many possibilities that have merit given what we know. Something even goofier than this might end up being what's behind all this. One thing this case has shown us is that anything is possible with that bunch.