Are you sure they can fire you for This? Maybe you can cash in? Maybe there's some kind of pro bono lawyer bros out there, or an ambulance chaser that will work on spec?

https://www.shrm.org/resourcesandtools/hr-topics/employee-relations/pages/employment-at-will-isnt-a-blank-check-to-terminate-employees-you-dont-like.aspx

. "In many states, you can't fire someone for off-duty conduct, as long as they're not bringing it into the office."