I am so sorry -
I have never been thru family court, but I agree what the others have said, don't lie in court. There were many times I would second guess myself - you did not say anything to make him do what he did. It is NOT your fault.
My RAH has said that to me in the past, if I didn't say so & so he wouldn't have done or said what he did - it is just an excuse. If you didn't say anything this time it would have been something another time.
When my RAH was using drugs he could get very mean at times even now he isn't using but his moods have changed.
You shouldn't have to live a life in fear of what you may say to him or how he may react. Please don't feel bad for him, there is help if he wants it. Take care of yourself and your kids.