A version of an "abduction story" was proposed on the early threads. It goes something like this:
SW and the girls were abducted out the back door (per the insinuation made by CW in his porch performance). SW was murdered and buried in the shallow grave, but the 2 precious girls are still out there, possibly alive and at the mercy of their captor/s.
To this I will add: If LE bought this tale, then CW could cash in on SW's life insurance policy. Yes, the little girls were covered under a policy through CW's work as well, but the payoff amount on SW most likely would be more substantial.
JMO
I do remember this conversation and I have wondered if this was actually his original plan. I do think he had a master plan. SW's car, keys, cell, etc. were still at the house and that could be expected if she and the girls had been abducted.
If that was his plan, he could have just come home from work on Monday, made some calls to her friends pretending to be looking for her, unlocked the back door and then called LE to report them missing. I initially thought there was a six-foot privacy fence along the back of the back yard, but I've also seen pictures of a shorter, split-railing fence along the back border of the back yard. If that is what is there, it would be a piece of cake to slip through the rails, or even hop over it.
JMO, that still doesn't explain SW's shallow grave. I'm not able yet to come up with a scenario that explains that. If he'd buried SW in a shallow grave far away from where he'd been that morning, and where the bodies of his little girls were hidden in tanks, that would make some sense. IMO, he was never going to get away with this, but this may have delayed his arrest. JMO.
SW's body would have eventually been discovered, and if he managed to be cleared of her murder, he would have collected the life insurance benefit on her. If there was an accidental death and dismemberment benefit attached to the coverage, he could have collected double the benefit. Insurance carriers consider the murder of an insured to be an accidental death. That may have been part of the plan, but I don't think he was ever going to collect, because I don't think he would have ever been cleared by LE.
Another thing that makes no sense to me is why he would tell LE that he told SW he wanted a separation before he left for work that morning. Why would he want LE to think there were marital problems? He was smart enough to know he didn't want LE to know about his affair. Marital problems plus and an affair = motive to LE.
Plus, her car, keys, cell, etc. were in the house. Is this separation discussion story something he came up with in a desperate attempt to try to get NUA to back off when she called him Monday? Perhaps to try to explain why SW may have just walked off with the girls - as in she probably went for a long walk with the girls to cool off and don't worry, she'll come home.
She and the girls were never coming home and he knew this, and the doors were locked from the inside and the neighbor's security cam showed SW never left via the garage. This made it impossible that SW could have left the house on foot.
What an incredible cluster, JMO.