I get the feeling that there was a clause in Trulli's contract regarding this kind of scenario, as the article in Autosport references it, and Trulli seems to be rather pragmatic about the whole thing, I guess it will all come out at some point.
Not sure that I am surprised, nor am I expecting much from Petrov, although he is not too bad, but I am fairly sure that, yet again there is more talent in the respective simulators than some of the race cars.