First off thanks to Ivan for pointing me in the right direction

It's actually really simple...there's a webforms control that's like a placeholder, tell it the controller you want to render and boom, she's there.

Here's an example

Page1.aspxView on GitHub
<%@ Register Namespace="Telerik.Sitefinity.Mvc.Proxy" Assembly="Telerik.Sitefinity" TagPrefix="sf" %>
 

<sf:MvcControllerProxy runat="server" ControllerName="SitefinityWebApp.Mvc.Controllers.MainMenu.MainMenuController" ContentTypeName="SitefinityWebApp.Mvc.Controllers.MainMenu.MainMenuController" />

If you need to add properties

Page2.aspxView on GitHub
<sf:MvcControllerProxy ID="MvcControllerProxy1" runat="server" 
                       ControllerName="SitefinityWebApp.Mvc.Controllers.MyWidget1Controller"
                  ContentTypeName="SitefinityWebApp.Mvc.Controllers.MyWidget1Controller"
                  SerializedSettings='{ Message: "This is a test" }'>
</sf:MvcControllerProxy>

...awesome

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