If the plug underneath the coil is loosen, the plug will get over heated, the ceramic part will spin loose . the combustion smoke will burn the coil also. I saw this my self. all you need retap the plug hole, replace the coil and new plug., But this pix could not help any one to diagnosis any thing. the pix is not very clear enough to tell the PCV vavle was off its gromet. If the PCV valve could popped off, I think the rear main seal down pour oil and cam seals will leak like you are urinating. Need more pix to tell. Hell I would not diagnose any thing on that pix.