I'm sorry for the general lack of sympathy, and I'm sorry this happened to you. It's gonna be 4-6 months of reserve, probably no critical coverage ever, you will probably not get displaced off the ship before you upgrade, at which time you can pick a different plane hopefully. ORD only, even if other bases open, CRJ won't go there.
If you and your family can live with that then make the most of it. If you can't, leave immediately, tell then it's because of the CRJ, return your bonus, and try again. If it doesn't work for family reasons, like you live in Dallas, and the wife is not up for a long term commuter lifestyle just explain that with your resignation. Hopefully it won't effect your future chances at AA but I don't know for sure.