I think this was a bad move on Disney's part. While I did not play Turok, I did just finish Tron: Evolution and thought it was a pretty solid title for what it was. I thought the game looked great overall. Sound design was done well. It actually tied into the movies storyline without being the game version of the movie. While the multi-player wasn't the greatest, it was quite fun to play.
My biggest gripe was control glitches, where sometimes the game would have me run up a wall when I wanted to run across it.
Propaganda Games seemed like a studio that had a TON of potential, it's a shame that they won't get that chance to really show off what they could do.