I don't think the holidays should enter into your thinking. Your kids are old enough to handle whatever happens. And the holidays are already stressful enough, I think there will be more stress trying to keep things "normal" through them than there would be in changing the situation.
I don't really see where he has given the slightest indiacation that he is interested in changing anything other than you. And changing you is what needs to happen. Just not in the way he is wanting.
