Sorry to hear about the bad experiences at work. I believe Dominos is a mix of company and franchise owned stores. If this store is company owned bypass everyone at the store level and go straight to human resources. Document everything that has been said and done in the past to the best of your ability. I mean right down statements and date them as accurately as possible. There is more than likely a field contact and 800 number to reach HR. Explain your situation and hope for the best. One thing to be leery of is many corporations have policies about working with relatives in the same store. I'm not sure if this will work in your favor or against.

If this store is a franchise then I'm not sure what route to go, but a HR manager is going to be your best friend in this situation. Do NOT let the store do, or say anything to you without bringing a human resource manager into the loop. Hell go all out and demand district manager and HR manager information. Call them and if you're not happy with their response ask for their boss.

The key here is to not say anything out of anger or passion. Stick to the facts and talk only to people that matter. In this case a general manager doesn't sound like an appropriate person as a pending termination has already taken place.

Write things down and get witnesses to sign the documents. Keep everything professional and be a better person by not dealing with the issue people. In this case let them make fools of themselves and you deal with the right people in a professional manner.