Does Wufoo not provide a regular URL for results? That would be ideal in this situation. Then you can set an HTML widget.
Alternatively, you can create a regular HTML page containing that wufoo code and upload it to your server. And you can use that HTML page as your source for an HTML widget.
If you want to reload an HTML widget, you can set a Unique Element ID for that HTML widget (something like
myframe1). Make sure you're setting this on the HTML widget and not a group it is contained in.
Then run this function to reload it:
var myframe1element = hypeDocument.getElementById("myframe1").getElementsByTagName("iframe");
// get the source of the current frame and reload it:
myframe1element.src = myframe1element.src