He wasn't distraught; he was just in a brain-strain trying to figure out where Laci put all of the the receipts for the baby clothes/supplies.
He definately was not distraught over the possibility that the bodies could be Laci and Connor, no, he was distraught because the bodies had surfaced, he had messed up again and he was about to be found out. Remember he did not say that he did not hurt or kill Laci. His reponse was they have nothing to hold/charge me with or something to that effect.
Yeah, that must have been it! They showed a clip tonight of SP in January interview, complete with his croccodile tear.....how disgusting.