I believe it's been considered the same as being arrested for quite some time, now. You may have been trapped on the ship (or since more recently behind a locked door, or under a planetary shield) deliberately, and Admin intervention to free such a person is inappropriate.
"May the Grace of Ara go with you, and His Vengeance be wrought upon your enemies."
The only other potential solution in that case is to ask somebody to fly to your location and pick you up. If you were once pilot then you will know roughly where you are to give coordinates. If you were a passenger have you checked the sim news to see if your pilot has been recently banned?