Iron Man #256 Newsstand

Iron Man heads to space to help fix his old space station that was destroyed by A.I.M. and a virus they unleashed.  As he moves through the station and tries to get the life support activated, it also accidentally activates an old A.I.M. bomb.  He tries to get rid of it but it causes a lot of damage and traps him in the ship.  He eventually escapes the wreckage but is forced to take off his suit, possibly exposing himself to the virus.  Next thing he knows he is waking up back on Earth with Rhodes helping him out of the rest of the suit.  Not only that but his scars have healed and he has no more lingering pain from his previous spinal surgery.