One of those key cognitive difficulties with evolution is our tendency to view animals as final products, as opposed to things which were developed. I assume Mr Jack is suggesting that minor changes in early development can potentially have much larger ramifications later on in the wombat's development. Rather than developing a pouch and then having to invert it, a minor alteration in the timings of growth surrounding the rear and front flaps is potentially all that is needed.
Ive never really looked into wombat pouches a great deal before. I would hesitate to call it an argument for creation, its more of an interesting question for developmental biologists. But I guess creationists have difficulty discriminating between the two.
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