Playing on the Dragon Shire map, Uther was consumed by Stitches via his Gorge skill. Immediately afterward, Stitches channeled the dragon statue and turned into a dragon. As Uther was still inside Stitches at the time, it did not spit him out - he was stuck inside Stitches inside the dragon. This effectively took him out of the game until the dragon was finished.
Credit: Rozbrykany for the video find