Well, that’s something to write home about. Just one day after “Glee” creator Ryan Murphy announced that three principal characters on the sing-and-dance show would not be returning after this season, he violated a cardinal high-school rule: He tweeted about it before he talked about it. That is, according to Chris Colfer, who reportedly learned of his oust via Twitter. “Yeah, I found out that they made that announcement,” he said of the stunning news in an interview with Access Hollywood.