looks like the same guy from the track day at wakefield in january in the evo,
i would have to say regardless of your mate or not, he did alot of silly things on the track, cut the iside down on me mid corner i took it wide to let him through the inside and he came through semi sideways and cut down my side, now it was my first time on a track i gave him plenty of room, but yet, accidents could occur and i think the way he passed me was beyond aggressive, it was not needed, and the driving instructor at the track that day said the same thing, he was novice at best, was far to aggresive and took to many risks and had bad lines to be a 'good' driver.
after looking at that video, it is obvious that the camera car is mostly at fault. however, the evo driver should have used his mirrors and let him through or taken that corner wider, it seemed to me that he cut in a bit harder to block the attempt of the camera car to overtake him, but wasnt quick enough so got nailed in the process,
but honestly, these things happen and you take the risk when going on the track.
but
like others have said both need some instruction and more track time, and to be a little more wary of others and putting themselves in other drivers shoes.