I can top that... unfortunately... my sister was in their situation... two young kids... he had three DUIs (one of which he had my youngest neice in the car) and once his drunkeness led him to hit her. Shortly thereafter he had an accident and never got violent again, but his drunken binges continued and she left him and took the kids with her. Though the courts in their infinite wisdom awarded him joint custody... they even gave him primary custody at one point... but that ended with his fourth DUI.
Oh that is really awful, sorry to hear that.