WaxLyrical
Honorary Master
Even if he is somehow immune to the virus, the physical damage done to him would make him bleed out, im mean just look at the blood fountain that was spraying out of him.
Check the scene again. It's not him that's getting ripped.
There's a few options:
-They landed on a manhole which gives him the option of escaping underground.
-The bomb which they planned to set eventually goes off and blows the walkers away and also distracts them allowing Glen to escape.
- Rick drives the RV straight through the fence and over Glen killing walkers and allowing him to enter the RV from underneath.
Wtf am I not involved in this show?