This is outburst is a perfect example of why McCain (A) Ran his 2000 primary campaign into the ground. (B) Will run his 2008 primary campaign into the ground.
The guy is just not stable. That said, I wouldn't mind having him be POTUS the day after the next 9-11. He might really go bonkers and let it rip at the Islamo-Nazis. Maybe the GOP can just lock him in a glass case in the bottom of the Pentagon and break him out when they need a Dr. Strangelove moment.
Recall the 2000 campaign? At the time, NONE of his former staff publicly supported him, and the ONLY Republican Senators who did were among those who voted for Clinton's acquittal.