So far nothing is explained. I am of the sort that believes there is an explanation even if we never find it. Right now we are searching through a black box without a flashlight, so we have to feel our way around. I think if one of us were there at the time, we would have an easier time with the explanation.The power company working in his area would cause plasmids to appear in his house? Sounds crazier than his story, if you ask me.
I am not going to resort to paranormal explanations just because we could not figure it out. I am also not fully signed on to it being a plasmid. A power company working on the lines in the region opens the possibility to some electric phenomenon associated with the grid.