I have a question whether it is posible to render usercontrols properly in a nested macro.

On my page I have razor macro that enumerates multiple nodes which again contains a RTE datatype. 

On that datatype I have different content including usercontrol forms. 

Now these forms renders ok with:

 @Html.Raw(umbraco.library.RenderMacroContent(box.GetPropertyValue("content"), Model.Id))

And to some extend they get output correctly.

The problem is that since they are usercontrols the aspnet callback functionality does not work right for example: 

<input name="ApplyTravelerForm_12$FirstName" type="text" id="ApplyTravelerForm_12_FirstName" class="required">

does not contain the entire control tree. I understand this is due to a limitation in the way umbraco renders the macro.

 /// Python and .ascx based macros will not render properly, as viewstate is not included.
        /// </summary>
        /// <param name="Text">The macro markup to be rendered.</param>
        /// <param name="PageId">The page id.</param>
        /// <returns>The rendered macro as a string</returns>
        public static string RenderMacroContent(string Text, int PageId)

Is there no way of extending or hacking this so that the control becomes aware of its context and thereby working?