To accept the Arian-Nazi story the prosecution has to throw out their current thoery of the case and accept that Lacy was not killed on the night of 12/23-12/24 by Scott.
I don't think so. It sounds as if Scott had discussed a possible kidnapping plot with these guys, but then finally went ahead and personally killed his wife himself on the night of 12/23,24. This new development doesn't change anything other than adding "proof" that Scott wanted his wife gone and was willing to use violence to do it.