Thank you for your post.
At this time, you can only move the file off the iPad by using iTunes. You cannot email the file or use MobileMe to transfer the file.
I encourage you to enter this as a product suggestion into our Feature Requests web form at:
These suggestions are read by our Development and Product Management departments where they are then discussed and considered for a future release. Although I could copy your post and paste it into the web form, there are some additional questions asked that only you can answer.