Was there room for him to have kept 2 wheels on the track?
Doesn't it matter.
Webber did the same, did an overtake, no room to stay on track,gained a clear advantage by being miles ahead due to run off and instantly gave it back. Didnt need team or FIA to tell him.
It's where masa isn't thinking straight.
Their [the stewards'] hands are tied a bit but I think it's harsh. To the letter of the law, the stewards have had to do that but I did ask them what he should do - stay on the track and hit Massa or run wide and avoid the collision?
Or the third option which happens every race, go off track but don't gain an advantage. Usually going of the track on an overtake you lose ground anyway, but ocasionally you gain and then you simply give it back.