Oh. Well, the flattened panorama from the mobile app (whether that be Windows Phone or iPhone) is really not ideal for re-uploading.
You would be far better off just taking photos with your phone's default camera app and then stitching them with ICE or Photoshop's Photo Merge function and then editing a badge on with Photoshop and uploading from there.
I'll try to get someone official from Photosynth or ICE to chime in on this, but you're really killing your resolution by shooting with the mobile app. If quality matters to you so much that you're going to all this trouble, I can't imagine limiting myself to the low resolution of the mobile app's shooting mode, no matter how cool it is.