You're right, it could survive. I'm thinking that with the narrative you'd then have to explain that so the audience doesn't feel like the story is unrealistic. Of course, with this being a documentary style piece, that kind of exposition would be easier than in a traditional film narrative.
He could always combine the corporation and the asteroid concept. Maybe the bio-engineering corporation found the meteorite and then started using the alien virus as a starting point to create the vampiric virus?
I think you're onto something here. I think that if the story took place in the near future then this would be a little bit more believable. Maybe the company was doing standard research on the meteor, but the scientists investigating it got infected with the virus...one thing leads to another and you have an outbreak.