I'm pretty sure Diaspora won't get a C&D folks, don't worry. 
Just like UT said... I wouldn't worry too much about a C&D, let's just say that most of the project has been known by even SyFy, NBC and the rest for a long time and still nothing of BSG projects were cancelled due to a C&D.
Also, It is pre-rendered, not high-end stuff, but they got "their" point across... This is a cinematic and usually, cinematics cost a bundle of money, therefore to reduce cost, you can :
A) Have a cutscene as a trailer, but with probably little they have ready right now, it wouldn't show their product on a "grandiose" light because their game engine and/or in-game models as still in Alpha, meaning a bunch of untextured objects and/or placeholders, or
B) Have a cinematic, with lower poly models, made hastily to show what the player "may" expect from the game and by having lower poly models, means lower times for the computers to "assemble" that cinematic.
