@pinkboris, I'm only your fellow user - not a Microsoft employee - but I believe that you could use a tool such as iExplorer http://www.macroplant.com/iexplorer/ to save all of your Photosynth app's files, which should include your mobile panoramas, but you won't have a way to view them as they are in a proprietary format.
The app does have an option to automatically output a flattened version of each panorama to your device's camera roll, if you've given the app permission to do so in iOS's app settings. I do realize that that won't help you with the panorama's you've already taken, though.
If you have a solid WiFi connection, I would just take the time to upload all of your panos to your Photosynth account. You'll have a safe backup of them that way and they will remain interactive, since the panorama's cube map formatting gets uploaded to Photosynth, rather than the flattened version that you would get if saving them to your iPod's camera roll.