It reminds me of the John McCain I remember from 2000 and the Gang of 14. A man of honor. If I had seen this John McCain througout the campaign I would have had a much harder decision this November.
I also think it is the first step in Senator McCain understanding that things do not look good in November and his best hope for a legacy that is not one of dirty personal attacks is to return to the Senate and do good bi-partisan work with a President Obama.
Even if he wins, good relations with Senator Obama are going to be crucial. He is the de-facto leader of the Democratic party. If he were to return to the Senate he will be the hands down favorite for the nomination in 2012 and a mandate spend the intervening years demonstrating good judgement and a bi-partisan ethic.
More than anything I'm glad that cooler heads may be prevailing before all of the bridges are burnt.