Mr. Wyns will conduct the evangelical service from a new stage, built with wood from the old one. "We wanted to take it down," he explained. "We didn't want even the thoughts of the stage. It was a real fancy-doodle stage; there were poles."But Mr. Wyns has no intention of throwing away the massive disco ball that once glittered over club patrons and performers: He intends to put it back in its rightful place to shine as a victory trophy over a new set of observers.