I may have found a potential work around. It seems that if I add the qListView web part and hide it, the InfoPath form displays correctly in the dialog. I set the connection to pass the ID from the form to the hidden qListView. I then created another web part page and added a qExcelViewer configured for the hidden qListView. Lastly, I created a hyperlink inside my InfoPath form to point to the qExcelViewer webpage. This appears to work with the exception that Excel is displaying an error message that the file format is not the same as the file extension.