I'm starting to think that LE does not have that much solid prosecuting evidence against FD.
FD knew he would be the prime and sole suspect in any violent crime against his wife. I think there would be premeditation and planning that went into this crime because FD's problems have been a long time in the making. I think his crime that morning was not spontaneous, and there was a plan that included covering up evidence of his involvement. The coverup/alibi/planting false evidence is in Chapter 3 of Murder 101, if you know that you are the only person that will be looked at. The cell phone on, garbage bin run in Hartford is not at all consistent with a rational plan, but it is so ridiculous it could be part of an "genius" red herring plan. I think that FD believes he is smarter than LE which kind of fits what we know of him.
And the best way to be smart is to involve someone else, someone as untraceable as possible in todays's surveillance state (and not MT).
Maybe we'll learn more tomorrow, but I'm leaning third party involvement, since it would seem that a body would have been found, and FD nailed to the wall with electronic/phone evidence, alleged blood evidence, and being under the microscope for a week.