My father is a state rep and also practice family law for many years, and thats how i found all this out.
Missouri AND Arkansas have nearly identical
laws on this matter, so I would reeeally do some research.
I also filed all my paperwork myself and you can say that the child is not his and not of the marriage. He can contest that if he wants, but all that would do would make him look like a drama king and could actually do harm to any thing he tried to contest later.