Should I relinquish my position to a colleague who has received a judicial order to return to it, and who is more deserving of it than I am?

If the worker was wronged and a decision was issued for him to return to his position, then you must vacate the position for him because he has a greater right to it. Furthermore, removing injustice from the wronged is a form of cooperation in righteousness and piety, in accordance with the Almighty’s saying: "And cooperate in righteousness and piety, but do not cooperate in sin and aggression."