You're wrong, and you really don't understand McCain at all.
McCain has a HUGE ego. He pines for all the attention that he received 4 years ago.
And -- often when McCain goes on the Sunday morning talk shows, I get the strong sense that the questions have been scripted in advance. McCain negotiates the questions, and prepares his answers.
McCain WANTED to be questioned about the VP slot, and he planned his "coy" answer -- which was certainly not a denial.
Now he's floated it more openly.
He knows that he can give Kerry cover on the Viet vet question, and on the defense question.
Kerry doesn't care about the other 'repub' issues. Kerry wants to win.
Winning is everything.
Sure makes it look suspicious, BTW, that McCain wanted on to Bush's Intelligence review commission.
You can now bet that McCain will be out to embarrass GWB.
One final point -- I PREDICTED ALL OF THIS on Sunday morning (and posted a commment here on FR saying so) after seeing McCain's performance with Steffy on ABC.