In Harmon v. Delaware Harness Racing Commission, the plaintiff (Harmon) sued the Commission to be reinstated in his job as Presiding Judge of harness racing. Explain why Harmon was suspended from his job, what promise was made to him and why the Commission refused to give him his job back. Further, the court noted that the Commission did not have a contract with Harmon to reinstate him, what legal theory did the court reference in finding in his favor and what are it's legal requirements?