I never said he aquaplaned off at pitlane speeds. Turn 7 in suzuka is very fast blind turn (even though the apex is not blind, the exit is) and the apex is also on top of hill which means the car gets lighter as it goes over the hill and in the wet you don't really have any room to go wide because the wet kerbs are slippery as well. My point really was that bianchi could have slowed down but still aquaplaned off. Or had a moment with going back on throttle. Or just have a "moment" at the apex.
Here is link to google maps on that corner: https://maps.google.com/maps/ms?ie=UTF8&oe=UTF8&msa=0&msid=114275729164008064732.0004786811016e795085a
The trajectory imho shows that the car went off the track straight after apex which suggests he did aquaplane off the track. He did go head on into the barriers/tractor but if you look at sutil's crash he went off rear first but his car spun around and he hit the barrier head first so one could imagine the same thing happened with bianchi. Also the speeds look quite comparable with sutil and bianchi.
basically the actual speed he was going at doesnt really matter
the fact that he aquaplaned means that he most definitely wasnt going at the speed required of him by the rules for double waved yellow flag situations
Apparently the sochi weekend came too soon so marussia did not have time to sell the seat. It takes a lot more time for potential drivers to sort out their sponsors. That or they just decided it was cheaper to not run the car.
3rd drivers are just extra income for the teams. When it comes to driving the cars the teams are happier to not have anyone drive the car than to have the 3rd driver drive the car...
Rossi was ready to drive at Spa and was the nominated reserve driver for this weekend. I suppose his backers could have had trouble coming through with the money, but I'm not sure how likely that would be.
Bare in mind that it's more about the team than what Bianchi should want. I mean, Bianchi's engineers are also his friends and are surely struggling with this and having all sorts of questions in their mind. I think it's disrespectful to talk about the fact they just didn't have time to sell the seat etc and to act like we know what Bianchi would want when in reality we have no clue.