You can even consider coming back now! Of course that ship won't go farther than Mercury orbit, but if you can send a ship in Mercury orbit to dock with it and bring it back you have a chance.
It had staged boosters just like the main part of rocket was staged. Added a little bit of fuel (like 50%) to second stage and than...you know. Asist, Orbit, landing.
You can even consider coming back now! Of course that ship won't go farther than Mercury orbit, but if you can send a ship in Mercury orbit to dock with it and bring it back you have a chance.