"The IIS Web Site you have selected is in use by SharePoint. You must select another port or hostname."

Hi

I'm fighting with SP2010 to re-create an extension to a web app in a test environment. the extended URL ishttps://test.domain.com

First I deleted the extended site from SharePoint (configured it to delete IIS site too). I checked IIS and my site is removed.
Also in the webapp list https://test.domain.com no longer shows up. Alternate Access mappings, my url is nowhere to be found, not in the public URL's. either

Get-SPWebapplication, lists only my original (non extended) site.  

I found an extra command that maybe could resolve this; "stsadm-o execadmsvcjobs" didn't give the desired result.

netstat -an tells me that nothing listens on TCP port 443.

In eventvwr i see one error mentioning my removed site;
Source: SharePoint Server Search, EventID: 14
The start address http://test.domain.com:443 cannot be crawled.
Context: Application 'Search_Service_Application', Catalog 'Portal_Content'
Details:
 This item could not be crawled because the crawler could not connect to the repository.   (0x80041209)

Looking for clues with this event doesn't lead me to new solutions.

Did I try turning if off and on again? yes :-)

When I re-extend my web app. I receive the error:
"The IIS Web Site you have selected is in use by SharePoint.  You must select another port or hostname."

I Have no idea where to look. has anyone any suggestions ?

Thanks in advance,

/S