This is about action and commitment to belief. Both the man who made the decision during the Korean war and the intelligent, benevolent beings have similar causes. The human bitterness that permeates the facility is merely window dressing for a bigger issue. We have always heard the "for the good of the few" versus "for the good of the many" arguments in every situation ethics discussion. Until we've walked in those shoes, can we really feel the depth of pain that such decisions bring about. The childish hanging on over matters he wasn't deeply involved in makes the one man seem petty and small.
This is definitely a low budget offering, projecting amoeba-like aliens unto a circular screen, but the story itself is one to bring about considerable discussion.