Villager AI for going outside over-rides AI for avoiding Zombies

During the night, zombies were swarming in large numbers around the door, due to the villagers being in there. However, when it was sunrise and the Zombies started to burn, BOTH Villagers ran outside the door, even though doing so would lead to their inevitable death from the Zombies.

Ignore the fence gates at the end, I put them in later.
The second image is what the outside looks like.