$computer = $env:COMPUTERNAME
$ErrorActionPreference = "Continue"

$ResourceID = (Get-WmiObject -Class SMS_R_System -Namespace root\SMS\site_SITECODE -ComputerName #SITESERVER# | Where-Object {$_.name -eq "$computer"}).resourceid

$CollectionIDs = (Get-WmiObject -Class SMS_DeploymentInfo -Namespace root\SMS\site_SITECODE -ComputerName #SITESERVER# | Where-Object {$_.DeploymentType -eq "7" -and $_.collectionname -ne "All Unknown Computers"}).CollectionID

$DirectRule = [wmiclass]("\\#SITESERVER#\ROOT\SMS\site_SITECODE:SMS_CollectionRuleDirect")

$DirectRule.Properties["ResourceClassName"].Value = "SMS_R_System"
$DirectRule.Properties["ResourceID"].Value = "$ResourceID"
$DirectRule.Properties["RuleName"].Value = "$computer"

foreach ($CollectionID in  $CollectionIDs) {
    (Get-WmiObject -Class SMS_Collection -Namespace root\SMS\site_SITECODE -ComputerName #SITESERVER# | Where-Object {$_.collectionid -eq "$CollectionID"}).DeleteMembershipRule($DirectRule)
}