This tape doesn't prove or disprove anything - it's virtually worthless. On the 15th it shows the PI meandering around an abandoned house and the area around it, opening garbage bags with a knife and turning over other garbage lying around. At one point he is shown on the phone - again, this means nothing - even if he was on the phone with any of the Anthonys, including KC, if they don't have a recorded conversation, it wouldn't be admissable in court - anything said could be contradicted by either party, no jury would give weight to that testimony. There is no systematic, gridded search for anything, much less a body.
The next day shows the PI in an area similar to where the body was found - again, this doesn't prove or disprove any evidence - it doesn't show the PI finding anything, it doesn't show him removing anything and it doesn't show him hiding or bringing anything to the scene. He's not talking to anyone at this location, all it shows is him probing the ground in several places, again in no systematic, gridded pattern. It also shows him at this site for only seconds, which wouldn't constitute a "search" to any reasonable person. Even if he had been there for weeks at a time, the tape only reveals him to be there seconds, and not blocks of time that would indicate any kind of search, other than cursory.
So to recap, what do we have here? Well, nothing. Anything that LP said Hoover told him is hearsay and not admissable in court. We have a PI working for the Anthonys doing a somewhat desultory search of two different areas, neither of which have been confirmed as the body dumping site. We have a person who claims to be a volunteer for the Anthonys with no other known association with this case shopping around a "world exclusive" of another person shoving a stick in the ground. This tape is worthless to the investigation, it is worthless to the prosecution and it is worthless to the defense. Even if the Anthonys told the PI that the body was there it means nothing because the body wasn't found in either of those areas. If the body had been found in either area, the media would have snapped that up in a heartbeat.
And here's something else to consider - if the tape had been turned over to LE, then how did the Anthonys get it to release it free from any licensing fee? Wouldn't it stand to reason that LE gave them a copy of the tape? Otherwise, we have to think that there is more than one copy of this "world exclusive" floating around.