Mark, I think you have a chance of submitting a claim to eBay for their money back guarantee, review their rules here,
http://pages.ebay.com/help/policies/money-back-guarantee.html. I went to the listing that you mentioned and viewed both pictures and I couldn't see a crack in the pan at all. And I have monitor with good resolution and contrast. Since the seller didn't mention the crack in the listing or present it in the picture, he was implying that the pan was not cracked. (I am assuming here that you didn't clean the pan at all.) Hence you thought you were buying a pan that was not cracked. False advertising by omission. Don't mention or complain about it being a spinner, because it will not help your case. Below is some information I copied from eBay.
When an item doesn't match the listing description
If a buyer receives an item that doesn't match the listing description, the buyer needs to request a return from My eBay. The seller should address the buyer's concern and offer a solution, such as accepting a return, offering a replacement or refund.
If the buyer doesn't receive a response or solution, or returns the item but doesn't receive a refund or replacement from the seller, the buyer can ask us to step in and help.
If asked to step in and help, we review the item description, photos of the item, if provided by the buyer or seller, and any other information about the item that the buyer and seller provide. If we can't determine that the item matches the listing description, if the seller has already offered a return, or the seller's stated return window and policy applies, we may ask the buyer to return the item to the seller.
When an item is returned to the seller
The buyer must return the item in the same condition in which it was received.
The seller is required to accept the return at the same location specified in the listing.
The cost of return shipping is the seller's responsibility. For return of items with a total cost of $750 or more, we require signature confirmation.
The seller pays for any customs charges on the returned item.
Good luck.