I don't think Glen is really dead, I think the Walkers were eating Nicholas, who fell on top of Glen. Every time a main character dies, we have gotten a definitive death from them. We weren't left in a cliff hanger. I think either Glen will fake being a walker ala season one, or he will find a way to get under the dumpster until the walkers finish eating Nicholas and dispurst. I am treating this like I do for GOT and Jon Snow, I refuse to believe it until I see it. Although we should get an answer next week about the fate of Glen, I am still waiting for the next season of GOT (or the next book GRRM ) for an answer on Jon Snow