Even if McCain ultimately takes the nomination, the squabbling may serve a useful purpose. It's clear that unless McCain has a meltdown so spectacular the media can't ignore it, Hillary or Obama will have no real opposition this election. There are, however, two other issues at stake:
Whew, that's scary though. Understand what you mean, and it may just come to that.
Maybe the MSM or a 527 will put out one of his old meltdowns.
John McCain Losing His Cool YouTube video