I don't think you're being unreasonable. It's really a decision you have to make based on the fact that if it sets him off, you have to go back thru all the legal drama again - and you're kids will have to endure it again, too.
With all I've been thru this year, for me personally, I would let the sleeping dog lie.
With all I've been thru this year, for me personally, I would let the sleeping dog lie.