"Joining hands." "Resurrecting God." "Grafting." The language of the missionary. This is what happens when you replace Halachah with western notions of pluralism by engaging in interfaith dialogue. Because of a sick need to be loved by the goyim, Rabbi Riskin flattered his partners in the dialogue by using the language of their theology. This was an unprecedented chillul Hashem from an unorthodox orthodox Rabbi who has a history of making egregious mistakes. I'm not accusing Rabbi Riskin of being a messianic Jew, G-d forbid. I'm saying that he made a tremendous chillul Hashem and almost surely violated the halacha by participating in such a project to begin with.
The most frightening thing is that he may have even given the missionaries a new weapon to use against Jews. I can just see it now. Some soul snatcher starting a conversation with a confused Jew. "You know even Rabbi Shlomo Riskin, who's a very famous orthodox rabbi, even he admitted that we need to join hands to resurrect God."
Another classic moment from Rabbi Riskin. Some of his lines reminded me of an "orthodox Rabbi" who has a television show on the internet. Funny little mental defective with an oddly spherical head and a hell of a shnoz on him. The only difference is that this isn't funny at all.