Based on the quotes I read, Jobs did his very best to spin this whole thing positively. But frankly, I think nobody's going to remember how he said it. What they'll remember is that Macs - as a different hardware option - are going away -- even though it's not technically true.
Jobs has nuked his hardware AND software sales between now and the release of the penti-mac. He's made his most passionate defenders - many of them here on this board - look like fools. This is because, although Intel and Microsoft are not one and the same, to the general public they might as well be. To most people, it will appear that the computer wars have been decisively won, by wintel. Mac fans like us will become Jay Leno punchlines.
Jobs may be a visionary, but he is famously not a people-person. I think he may have badly misjudged the PR fallout that may result from this move.