And now Glenn is dead *sob*
... Or is he? A number of factors suggest those are the other guy's entrails being ripped out, not Glenn's:
-- The other guy fell on top of Glenn.
-- Glenn looked horrified as this was happening, but not in agony. When I saw that, I thought it was a problem with his acting, but now I suspect it's actually very good walking-a-fine-line acting, suggesting he's horrified and terrified but not in physical pain, yet simultaneously leaving that unclear to viewers.
-- The walkers conveniently left Glenn's completely exposed head untouched, though it's often one of the first places they go for (remember recently when they ate someone's face).
-- On "Talking Dead," the mood was extremely mournful, with everyone more or less assuming Glenn was dead. However, the actor who played Glenn was not a guest, which is often the case after someone dies. And host Chris Hardwicke read a coy statement from the producers saying we hadn't totally seen the last of Glenn, in some form or another, whether part of him or in flashback or whatever -- leaving it open that he could return as a zombie, or partly injured, or seen in flashback, or be perfectly fine.
On the other hand ...
-- Even if he was alive when we last saw him, how would he ever get out of that predicament? Even Carol with her flamethrower or whatever it was wouldn't be able to get him out of this one.
-- And meanwhile, Rick being surrounded in the RV looked pretty screwed himself. Several people noted that they hadn't seen Rick look so despairing for quite a while.