I have to agree it was a true and total jerk move to toss you and your child out....
surely there is some truth to his confusion and emotional instability in sobriety but that doesn't excuse the action nor make it hurt any less.
Might be best that you just focus on you and your child for now, getting the support you need and give yourself some space and time.
Maybe in time he will come back around to a new emotionally-capable place. Maybe this is a painful stage that can one day be healed. Maybe it will lead to a place that is far better than ever. Or... maybe that guy is an immature jerkwad who even in sobriety won't have his proverbial sh1t together for some years to come. Either way, you focusing your energy and love on yourself and your child for a while won't hurt.
I'm sorry for your challenges.... yet remember; they do make us grow and deepen our lives.