This powershell script removes groups from all the sub sites where the sub site group equals a value. Use this when you want to remove a group from many subsites at the same time.
$topSite = Get-SPWeb http://scushp01/Branches/Auburn
$topSite.BreakRoleInheritance($false)
foreach($r in $topSite.RoleAssignments){
if($r.Member.Name -eq "TheSound Visitors")
{
Write-Host "Removing.." + $r.Member.Name -ForegroundColor DarkGreen -BackgroundColor Yellow
#$topSite.RoleAssignments.Remove($r)
}
else{
$r.Member.Name
}
}