I'm new here and apologize if any of this is out of line. Some of my thoughts on this case after trying desperately to get caught up..
I'm analyzing this case from the perspective of a husband, a father of 1 daughter with another daughter 2 months away. I work in sales and travel frequently. I have never had an affair or cheated on my wife, but have business associates who behave similar to JY (They are married and pursue women ).
Most of the "guilty" theories here and elsewhere seem to have been created under the presumption of guilt. I've tried to presume JY was innocent before looking at evidence. I also ask myself "what would I do?"
1) Re: Talking to police: JY was on his way home to Raleigh after murder when it became apparent investigators were focusing their questions on him. His friends told him to lawyer up and not talk. He failed to help police find killer. Never assisted with investigation. My take: Having LE in my family, I have always been told that suspects should NEVER talk to police - even during a traffic stop. The reason is that it CAN NEVER help. Anything you say can be used as evidence against you. Anything you say CAN NOT be used to help you in court. Once you agree to talk, police could quite literally lie about what you said and it would be your word against theirs. As hard as this would be, I would have done exactly as JY. However, I would likely have been more open with friends and my murdered wife's family.
I'm only addressing this section, curiosity only. If you were out of town on business, and your pregnant wife was found dead in the home, brutally murdered, would you never help the police by answering simple questions as to 'was it normal practice for your wife to be sure to lock all the doors at night?' 'Was it normal practice for your wife to perhaps take the trash outside after dark?" "Is there anything here in your home that you see out of place/missing?" Early on, when the basic theory of the crime is trying to be determined, I mean. Like 'no forced entry', so 'could someone have hidden in the bushes and attacked your wife as she took out the trash and gained entry that way?" 'Or does your wife NEVER go outside alone after dark to do those things when you are out of town?'
Since you were hours away, and you knew you were innocent, would you not want to help find out who the heck beat your wife's face/head to a pulp? Like wouldn't you say 'you know, there are some trailers behind our house, and I've always been a bit concerned about that.' Or perhaps, 'you know, I was outside mowing the lawn Thursday afternoon, and I saw some 'unknown' scummy looking characters walking/driving through our neighborhood.....'
As an aside, we live on a road somewhat similar to the Youngs, although far more rural. About a dozen homes along the dead end road we live on, but all on extremely large lots, with woods between some, and thick woods where the road dead-ends. A couple months ago we discovered that some neighbors had their cars 'entered' over-night. We always locked our cars, so nothing was taken from us. Once one neighbor said 'hey, somebody took my loose change and a couple other things from my car over-night', the word got around to those of us who live on this road. Pretty soon a couple neighbors began to recall some 'not usual to the road' teen guys they'd seen walking down our road the night before the thefts. Various neighbors who'd either been outside having a smoke, or going out to their car for something, etc. a description of the *guys* began to form. And the fact that being extremely rural, on a dead end road, we don't get a lot of 'strangers' out walking, day or night.
What I'm trying to ask is, wouldn't you help at all in attempting to figure out WTF killed your wife??? I just don't get that? I've followed crime my entire life, even told hubby, 'ask for a lawyer', but if I knew I wasn't guilty, and somebody brutally murdered my husband, in our home, while I was out, I'd be banging on everybody's house up and down our road to see what my neighbors saw while I was gone. Much like the broken into cars.