Thank you Rubin.

No. Actually what I wish to accomplish is that if one tries the USB
drive he/she would conclude that the drive is not working at all or as
it should.

For instance
-the letter drive does not appear, or
-the drive appears to have 1Kb available, or
-no files can be copied to the drive, etc.
.... or any other critical malfunction

I wish to regain full functionality (with some inverse trick) at any
time.