Good parent, terrible wife/husband?

InstaPundit Glenn Reynolds links this not terribly insightful piece from something called "Shine from Yahoo!®" called "Mom Confession: I'm a Terrible Wife." Its author writes, "I'm a very good mother. But I'm a terrible wife." By way of commentary, Prof. Reynolds adds:

Being a good wife is part of being a good mother. If you’re a terrible wife, you’re not actually being a good mother.

That bit of punditry should have come with a tsunami warning. Prof. Reynolds' remark is going to spark a lot of debate, including some very vehement disagreement.

By definition, his comment doesn't include ex-wives, nor husbands of any variety. But I would be inclined to amend his statement to broaden it to say instead:

If you're a parent, and your kid has another parent with whom you're regularly failing to cooperate, then neither of you is being a good parent — regardless of whether you are now, or ever were, married, and regardless of whether either of you is, or ever was, a good spouse.

I never do remotely as well, under my own metrics for judging my performance as a father, as I think I ought to do. I'm constantly aware of my own failings. But at a bare minimum, I expect myself to cooperate actively and continuously and creatively with my ex to promote the best interests of the treasure we continue to share.