You would think. But seeing how they brushed of the question by the domainer (posted earlier), they seem to want people to forget about it and act like it never happened.
If they had any merit, they would say they would look into it. And if they found that the domain owner created fake accounts (which is likely), they should ban him permanently from not just auctions, but any GoDaddy service. They should force him to move his domains and services somewhere else.
When people shill bid (with no intent to pay) it looks really bad on the company (GoDaddy) and their auction platform.