The bad thing about Glenn getting eaten is that in half an hour, the walkers will be hungry again.
The folding knife snapped off in the skull when he stuck one of the zombies.. (sorry, walkers).
He then was pushing on the chest of another walker that had the machete stuck in its shoulder and cut himself when he pulled it free.
I would bet Rick doesn't lose his hand on the show because of the difficulty of portraying it on camera. I wonder if Carl will have the gruesome injury he gets in the comics, though.
On the bright side... Maggie is single now.
Maggie is hot.