While I enjoyed Tom's research and enthusiasm during the majority of his dvd commentary, his strong dislike for the movie seems to be based on a misreading of the film. For one thing, an alternate ending having the aliens being malevolent and genocidal while our scientist hero Carlson embraces them has already been done in "The Thing" - and Carlson is a clear contrast to The Thing's scientist. Carlson isn't cooperating out of blind trust of the aliens. The aliens (in human form) approach him and warn him to do nothing or they'll kill their hostages - so they're making it quite clear they don't trust us either. The character motivations are more like a conventional crime-drama or western: Carlson has to walk a fine line between keeping the semi-bad guys happy by not telling the police, and knowing when to take action. Again, his fight with the cop is only because of the alien's warning, not because he trusts the aliens (he knows we're no match for the alien's power).
When things start to unravel, he approaches the aliens in a stealthy manner (because he knows they see him as a threat), brings a gun and has a shoot-out with an alien guard. Nothing suggests he has a simplistic or naive view of the situation like, for example, the revelers do in "Independence Day."

Speaking of Carlson, he's an excellent facial actor - I love how his alien double had that far-off blank look which turns into an evil smile.

a horse is corpse, of course, of corpse, a horse is a corpse, of corpse!