After thinking about it I agree, what if it was planned, but I also don't think the dogfood industry is monolithic enough for that to work. Probably someone trying to get "discount" ingredients or mixing machine usage without proper cleaning, or atleast that's gonna be the official story..... But we'll know better won't we? ;o)
We'll probably never know the truth. The companies are going to scramble to avoid the class action suit that's probably coming.