This code returns an generic error - is it not possible to use simple operators to remove rows from a data extension?
<script type="text/javaScript" runat="server">
Platform.Load("core", "1");
var DE_Lead_ExternalKey = "0CFBB346-2E4D-41CF-8649-CFF16A3CB6B2";
var DE_Lead = DataExtension.Init(DE_Lead_ExternalKey);
var filter = {Property:"EID",SimpleOperator:"contains",Value:"_temp"};
var remove_rows = DE_Lead.Rows.Remove(filter);
</script>