Trying to find a short story my father read to me once.
It involves the minds of convicted criminals being placed into insect-like bodies to man small spacecraft. They perform scientific research and other tasks while serving out their time, at which point they are returned home to their bodies.
There are some who go rogue, remove the remote kill switch from their bodies, arm their craft, and turn to piracy.
The story must have been from over 20 years ago.