I assume you are referring to if he perhaps revisited the house later that night, after everyone went inside? It's true, we don't know his movements after a certain point in time. I think LE does. And I also think LE is satisfied with whatever information they have on his whereabouts that night, probably by talking to him as well as if there was anyone else around him later that night. I can see them recalling him after the SW to ask him specifically if he saw or noticed things in the house that pertain to what was seized. They probably asked him about the area of the dog hit, did he go in the bedroom at all, etc. Do we know if SB was recalled after the SW?