Telerik Editor Issue When Overriding Page Render Method

Telerik RAD Editor is used in one SharePoint WCM site. To include Flash objects and scripts inside RAD Editor, I did following steps:
1. Add "<tool name='FlashManager' />" to Editor configuration file in C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\wpresources\RadEditorSharePoint\5.5.1.0__1f131a624888eeed\ToolsFile.xml. This ensures the flash manager icon is available in edit window. Options for adding this setting:
2. Update all RADEditor field controls in page layout from:
<telerik:RadHtmlField id="RadHtmlField1" FieldName="fieldName" runat="server" CssClass="telerikeditor" ></telerik:RadHtmlField>

To:

<telerik:RadHtmlField id="RadHtmlField1" FieldName="fieldName" runat="server" CssClass="telerikeditor" AllowScripts="true" AllowSpecialTags="true"></telerik:RadHtmlField>

This makes scripts and special tags (such as flash <object> tag) legal inside RADEditor.

But the scripts and flash content were not showing. The source html shows something like:

<pre style="display:none" id=RadEditorEncodedTag>....</pre>

I googled and couldn't see a fix about this issue. So I used reflector to find out how Telerik does under the hood. And I figured out that RAD Editor stores non-standard tags like flash objects and scripts in following format:

<pre style="display: none;" id="RadEditorEncodedTag">Base64codingObjects</pre>

RADEditor field Control will decode it during render cycle:

protected override void RenderFieldForDisplay(HtmlTextWriter output)
{
if (!string.IsNullOrEmpty((string) this.ItemFieldValue))
{
    bool canCacheResults = true;
    string html = HtmlEditorInternal.ConvertStorageFormatToViewFormat(
         (string) this.ItemFieldValue, out canCacheResults);
    output.Write(EditorTools.UnEscapeSpecialTags(html));
}
}

The problem is that Render Method is overridden in the custom page layouts, and this RenderFieldForDisplay is not invoked. I then added such decoding logic to the overridden Render method:

        protected override void Render(HtmlTextWriter writer)
    {
         //...
         StringBuilder sb = new StringBuilder();
         StringWriter sw = new StringWriter(sb);
         HtmlTextWriter ourWriter = new HtmlTextWriter(sw);
         base.Render(ourWriter);
         string writeString = EscapeRADEditorTags(sb.ToString());
         Response.Write(writeString);
         //...
    }

    private static string EscapeRADEditorTags(string html)
    {
        try
        {
            MatchEvaluator evaluator = new MatchEvaluator(DecodeMatchManually);
            return Regex.Replace(html, 
                    "<pre\\s+(style=\"display\\s*:none\"\\s*)?id=\"?RadEditorEncodedTag\"?[^>]*>([^<]+)</pre>", 
                    evaluator, RegexOptions.ECMAScript | RegexOptions.Multiline | RegexOptions.IgnoreCase);
        }
        catch (Exception ex)
        {
            Logger.LogException(ex);
            return html;
        }
    }

Everything works properly after this code change.