I think you read that wrong - Dobson and McCain are on the same side. However, reading the article is very hard because its written cryptic, as if they author is trying to portray conservatives as being bad for being against this bill which crushes free speech.
"Sen. John McCain (R-Ariz.) has told conservative activists that he will vote to strip a key provision on grassroots lobbying from the reform package he previously supported."
When McCain first supported it, Dobson turned against McCain. When McCain found the 800 pound gorilla of the Christian Right was opposing him, he changed his position. McCain is a snake.
No, they are not on the same side.
They may be now that Dodson has mounted a massive campaign against this bill - but he knows McCain for what he is.