I suppose that's one possibility although plenty of shots had already been fired. I just chalk it up to silly direction.
Thinking the same, they probably wanted to further show the extremeness of his bi-polar personality. You know like John Rambo style!
Anybody notice Maggie pushing Glen away touching the zombie goo in the process. Then I thought do they have antibacterial soap to wash that off. They're always dirty so that indicates they might not be showering. With no generator they only have cold water too.
Marcus Aurelius: Tell me again, Maximus, why are we here?
Maximus: For the glory of the Empire, sire.
Baked, not fried... the healthy choice.