I don't think that theory is too 'way out there' at all. PVdS seems about that slimey to me. I do feel for Mom Vds though. She is in total anguish.
Mama Kalpoe sho was dishin'... white b' was dronk, didn't even speak to mah bwais, doin' it in the back seat, they was like "get a room".
Mommy VDS is comes across as being in deep denial, but it's hard to believe anyone can be that gullible. She and Daddy VDS both admit that Sonny skipped out of the house very late at night--on a school night even--in violation of family rules. He's hanging out in a bar while under age. No child that behaves like this is an angel. She told Natalee's mom that Sonny isn't arrogant--he's confident. Mommy VDS is enabling Sonny to the max. Also, seems to be fairly certain that Sonny has been changing the tune he's singing to the authorities--not many innocent children lie their butts off to the police.