If the drive is under warantee it can be returned to SanDisk, and SanDisk has been known to allow people in your situation to smash the drive before returning it. Check the SanDisk RMA link and see what they say.
http://kb.sandisk.com/app/answers/detail/a_id/5232/~/return-material-authorization-(rma)-process
Maybe the eBay seller would support the same option.
