He won't drop out because of this, if that's what you mean.
But he can no longer be elected President.
So it depends what you mean by "end" his campaign.
As usual Ford shows he has no idea what he is talking about. Confidently stated though.
Whether Obama can or cannot be elected president will be determined not by these details, but by the level of racism in the american voters. The triggers or code-words to remind us "he's a gawddamn n****r!" would be found or invented by the Republicans regardless of what his 'pastor' said.