[Littleleeroy]

yeah i was surprised they take the hosts out. i heard something at some point about them being fitted with an explosive in the base of the spine that goes off if they leave the park so i was confused, but maybe they can just deactivate it or something.

Well the majority of hosts weren't trying to leave the park, they were just acting as themselves with the added bonus of being able to really kill the guests. So QA were just trying to reclaim the park and capture/kill all the hosts so they can turn them back to normal.