You will have to use the ConfigureStorageDrsForPod_Task method to change the settings for SDRS.
In the StorageDrsConfigSpec object you can disable this.
Combined with your Where-clause this could be something like this
$storMgr = Get-View StorageResourceManager
$pod = Get-DatastoreCluster -Name $datastorecluster
$spec = New-Object VMware.Vim.StorageDrsConfigSpec $pod.ExtensionData.PodStorageDrsEntry.StorageDrsConfig.VmConfig | where {(Get-View $_.VM | Select -ExpandProperty Name) -like "*_replica"} | %{ $entry = New-Object VMware.Vim.StorageDrsVmConfigSpec
$entry.Operation = "edit"
$entry.Info = $_
$entry.Info.Enabled = $false
$spec.vmConfigSpec += $entry
} $storMgr.ConfigureStorageDrsForPod($pod.ExtensionData.MoRef,$spec,$true)
Note that the Get-DatastoreCluster cmdlet can be used to replace my function
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