Australia - Prospective Marriage Visa (Subclass 300)

Hi All,

At 2008 we've got a visas Class BN Subclass 136 Skilled – Independent visas to the following applicants:
myself (Primary Applicant) and my wife (Family member) - no extra points were provided from my wife to get this visa

Right after we've moved to AU, but April 2009 we were divorced and she left Australia.

I'm getting to be a sponsor for my new partner (Prospective Marriage Visa (Subclass 300)).
My worries are about Sponsor Eligibility - immi.gov.au/migrants/partners/prospective/300/eligibility-sponsor.htm

It says
When you may not be eligible

you have sponsored another partner within the last five (5) years

So, the question is: can my ex be identified as a partner? Will I be restricted to apply?
Please advise!

Thanks!