Vestigial Structures Are Evidence of Evolution

 
Bill Dembski writes in Vestigial Structures by Design ....

Vestigial structures in biology are commonly cited as evidence for evolution, and it may well be that they did evolve. But if it is evidence of evolution, it is evolution in the wrong direction — it’s not the sort of function enhancing/innovating evolution that is supposed to give evolutionary theory its bite. Vestigial structures, after all, are structures that have lost their function. If all of evolution proceeded in this fashion, we’d quickly descend to a world of nonfunctionality.

Dear IDiot,

You can't have your cake and eat it too.

Either vestigial structures are evidence of evolution or they aren't. You don't get to pick and choose whatever fairy tale version of evolution you like whenever it takes your fancy. The fact that some whales have tiny pelvis bones and tiny legs buried deep under their skin tells us something about evolution. It tells us that whales are descended from ancestors that had hind limbs. The fossil record confirms this.

How does the wonderful scientific theory of Intelligent Design Creationism explain this?