SharePoint Site Collection Administrators with PowerShell

Suppose you want to delete a user from Site Collection Administrator but not deal with the Owner and Secondary Owner properties business…

Mind you, even if you like to ignore ownership properties, there still needs to be at least one site collection administrator.

$site = Get-SPSite http://sharepointsite/sites/MySiteCollection
$RemoveThisGuyAccount = "DOMAIN\BadSiteAdmin"
$AllSiteAdmins = $site.RootWeb.SiteAdministrators
$RemoveThisGuy = $AllSiteAdmins | where {$_.UserLogin -eq $RemoveThisGuyAccount}
$RemoveThisGuy.IsSiteAdmin = $false
$RemoveThisGuy.Update()