At first I was going to ask if Mi is a no fault state, but then I remembered you said they gave you a reason.

So, the only thing I have left based on what's here so far is to ask if there's a person in the union you can complain to about the person in the union you already complained to?

Ya know, like a 'my brother's keeper' kind of dude/chick?

If there is, I'd talk to him/her about the guy/gal you talked to about the firing and injury thing.

If not, then I guess you just hurry up and wait for a little while. Or get an attorney who can do the hurry up and waiting game for you.