I would. I never saw any GOP Presidential candidate that anxious to lose.
It's true that McCain could have ran a much better campaign. He left a lot of potential issues unexplored or underemphasized, but being a subpar candidate doen't imply you are "anxious to lose," any more than a batter striking out means that he's dumping the game. I don't think that the choice of Palin as running mate was consistent with a "dive." Plus, McCain performed well in the last debate when he finally went on the offensive and staggered O.
You can easily compare his losing campaign to Bush Sr. in 1992 or Bob Dole in 1996 for fatal flaws.