sin_of_nature , i wouldn't be too worried about the Unpaid Item Dispute, as the sellers need to open it in order to claim a relisting credit, and as well as the final value credit.
The Unpaid Item Dispute would be closed in approximately 8 days after it is opened, you don't need to do anything, just ignore it.
More info here
http://pages.ebay.com.au/help/tp/unp...m-process.html