UPDATE: Wow! Not only did I get an answer back from Jeff Beringer, resource scientist and conservation biologist for the State of Missouri, but I got it back almost instantly. Someone give this man a raise, or at least a valuable first edition copy of Aldo Leopold's book on Game Management! Mr. Beringer clarifies that:
•Early test results showed coyote DNA was present in the sampled animal
•Follow up tests are planned using DNA from wolves from nearby great lake states to see if their wolves also have coyote DNA.
•It is possible for this animal to be a wolf or wolf hybrid and carry coyote DNA
From what I read here, the DNA testing is not done, it only says there is coyote DNA present.
In the picture where you can see the body, it appears there is some curl in the tail. Which is an indicator of domestic dog in the breeding.