This is the kind of allegation that doesn't help us. You could just as easily argue that walking out on that meeting without trying to convince other people that they were wrong would have been irresponsible. By staying there, arguing that it was wrong, and voting against it, he did the right thing.
You can try to spin that differently, but that's a pretty effective explanation in my view. He voted against it, and that's what his campaign will pound into the ground if Rove is dumb enough to bring this up.
This is up there with trying to link Clinton to various deaths. Anyone who isn't already firmly against Clinton is going to dismiss that as a whack-job argument. It serves no purpose other than to discredit the person who makes the allegation.
Of course, I *do* still think Vince Foster and Ron Brown and Jim MacDougal were all murdered. So salt my humble opinion to taste before ingesting.