Does the print driver support the PrintTicket technology?
If this is an XPS based print driver than the spool file is XPS. You can rename this file to a ZIP, then you can extract the print ticket. If it's not XPS based I'm sure there is some devmode conversion to generate a printticket but I do not know how to suck that out of the job devmode.
I printed 7 copies. Open the .piece file.
</psf:ParameterInit><psf:ParameterInit name="psk:JobCopiesAllDocuments"><psf:Value xsi:type="xsd:integer">7</psf:Value>