This is EXACTLY what I think it is about. IF that info were to come to light now, JB (if he in fact told DC to go find the body and call him, not LE) would be in deep doo. The entire case would go up in smoke, because a) KC would in essence be confessing to her crime and )b her attorney would be in cahoots to cover it up. MISTRIAL before the trial.
AND...the whole scenario about KC telling JB where the body was located, and somebody overhearing in the jail, and passing that info along to RK......it all fits.
I think that scenario would turn the whole case upside down and might be good news for KC's defense.
KC could tell JB where Caylee was and he'd be bound by attorney/client privilege to keep her secret. He couldn't tell anybody without KC's permission. However IF that conversation was overheard by a guard, repeated to RK and that is how RK found Caylee, KC's constitutional rights would have been violated. The defense could try to have all evidence found at the remain's site thrown out because of how it was found but it would have to be done without violating KC's right to privileged comminication with her lawyer. I don't think the public could ever know anything KC told Baez or DC while DC was Baez's agent.
imo