Selective Policy Enforcement, Employer who fails to follow own policy

I am wondering what my legal options are, if any. I was terminated for "Poor Attendance" based on a progressive disciplinary plan. Per policy my occurences were to be reviewed on a said date, which did not happen. I asked repeatedly what I should do if a situation came up where I had to call in - no guidance was provided. I make it 1 month and 29 days away from the date which disciplinary action is to be removed when I have to call in. I am suspended for a week and then fired, made ineligible for rehire, denied unemployment and, because of rehire status lose my second job. I request a discharge review hearing, which employer offers to me and eventually get it 6 months later, only after contacting the VP of HR directly. At said hearing I am told that employer is currently reviewing it's policies so that they are more aligned with the culture of the community, but none the less I was discharged based on policy in place at the time. It was acknowledged that I had no performance write ups, that I was terminated during a transitional time when our director of 4 years was stepping down due to mismanagement, and that it was common knowledge that other employees were offered alternated work days to prevent occurrences when i was not. 6 months after the fact my termination was modified to make me now "Eligible for rehire" and free to reapply if I choose. I have several questions about different legal aspects of my situation, but really want to know do I have a leg to stand on.