thanks for letting know about that insim. It looks really good. I used to do that thing but it sometimes turned out bit funny due to blind spots - when I waited for someone to show in mirrors. And, pity I havent done any countercounter overtaking (S1 corners were too short for something like that).
Back to topic - I witnessed the problem with hotlappers (who tried to stay on best line whatever it takes) or fairly noobs who knew racing line but didnt know braking points and lines of inside overtaking (letting me counter overtake them ). Practice with AIs is educational - they just dont see you.
I couldnt have your point of view, but from mine (couple of replays) it looked like Hamilton took the overtaking line giving room both of them. I wont argue, just will try to get heli replay.
btw: today the same surprise in Barcelona - Dovi was passing from 3rd Loca(1th) and Loca thought "ok, thats it, lets turn", but no, there came deAngelis - which costed Loca 1st place (finished 4th). And I think it was quite resembling surprise.