No, the files are extracted in the same directory as kickstart.php (which is also where your backup archive typically lives as well). The only thing that's extracted in addition to the site is the installation folder which has the restoration script (ANGIE) and the database dump. But if you were to delete that you wouldn't be able to restore your site, of course.
As I said, the problem is that you do not have enough site for the site plusthe backup archive. If you do not have the backup archive on the server you will have, by definition, enough space to complete the restoration.
Nicholas K. Dionysopoulos
Lead Developer and Director
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