Hide the "public websites - with approval" site template from the new site creation interface, however make sure that the "public websites - with approval" site template is still available as a site template choice through Site Settings so that webmasters may restore it as needed.
TKT-59332-904BWW<http://atel-crm/ATEL/cs/cases/edit.aspx?id=%7b11B1BC89-B70C-E111-987A-00505683039A%7d#>