Unfortunately, the progressives, who didn't care much for Barbara when she was alive, promptly started an attack. That was when the editors probably re-read the column. To their credit, they ignored the flak. But the second column was still over the top. They made the justifiable call not to run it. I have seen the column in question.
I speak as a columnist for my college paper (Cornell College in Mt. Vernon, Iowa), who had one column pulled shortly after the 1994 elctions over an item that had to the potential to unintentionally offend people. I asked why it had been pulled, they told me, and I kept that in mind for future columns. This was much milder than what Ann's column, written in the heat of anger.
Had Ann not mouthed off (on Politically Incorrect of all shows), she'd not have been fired. And we'd not be in this fight amongst ourselves. Both sides have som fault in this, and I will continue to read both Ann Coulter's columns AND National Review Online and OnDeadTree. Both have their place among our just and noble cause. And I hope they can patch things up later on.
I think he expected her to retract them at a later time. When she didn't, they forced her to leave.