I know this is only about his emotions:
When he told the reporter to get off his property, he came off as an arrogant person with a bad temper.
When the reporter was in his face asking him questions as he was trying to drive away, he looked like he was about to LOSE IT. He appeared to have a hard time “keeping it together”.
Innocent (or even guilty), I’d expect him to be putting on more of a concerned front, given that the mother of his child is missing. He wouldn’t have to even say anything to convey a sympathetic demeanor.
Instead, he comes across as an agitated person with a bad attitude.
Perhaps he’s irritated that he’s being hounded by LE and the media, if he’s innocent. Although, coming across miffed doesn’t look good in the eyes of the public when the mother of your child is missing.
If he’s guilty, he must be confident that they’ll never find the body, given his smug behavior.
If KB broke up with him on Thanksgiving, I could imagine him doing something ugly out of rage. Being home with the baby while KB continues to outearn him and dates other men could have been something his ego couldn’t handle taking.