Be honest. You'd never vote for him anyway, regardless of the recall debacle.
1) Don't vote on principles. Vote for Arnold because he can WIN.
2) If AS doesn't win because of a split vote, then don't support McClintock. It's better to have a democrat win just to show who's boss.
This reasoning shows up the true colors of those who will support a liberal for 'pragmatic' reasons, but will then refuse to support a conservative out of petty revenge.