Hmmm....
Take a printout of the document .
Sign it and Scan it .
Email it back to your flying school .
Ask them to print it out and sign it .
Rescan it and send to DGCA and CC a copy to you .
I am not sure exactly how the above method might be acceptable to VP singh but give it a try atleast .
If he demands an original copy then you will have no other option but to do as he says .