John McCain did "all he can do" but still can't stop NC GOP Chair Linda Davies from running its racist ad

I found this passage very curious and a real demonstration of weakness on the part of the GOP's leader, John McCain:

On whether he has the ability to stop the NC GOP from running an ad with clips of Wright, McCain once again said that he had done all he can do, although he did admit that he has not personally tried to contact the state party and he does not plan on punishing the party if they go through with plans to place the ad on TV.

So, he's doing all that he can do, but Linda Davies is still overpowering and out-maneuvering McCain. If McCain can't muscle Linda Davies, how can he show any strength? Seems like McCain is actually either a pushover -- or maybe he's intimidated by this woman: