GUYS. Blaine (Darren Criss) is wearing a Warblers jacket. And singing with the Warblers! Does this mean he's decided to transfer back to Dalton? We seriously hope not, but we have to say... it is great to see the Warblers back on Glee again. Get a sneak peek at their full performance of Kelly Clarkson's "My Dark Side" from Glee Season 4, Episode 7: “Dynamic Duets.” Gulp.