I don't think there's anything mistirous about that accident. And those statement by Adrian just confirm it.
It was a sudden lose of down force that caused the crash. As simple as that.
The sideposts of the Williams were too long leading to a very small window in which the difusor worked. When the front of the car was diving" to close into the street there a sudden lose of downforce could occure as the diffusor stopped working properly from one moment to the other.
Tamburello was very bumpy. The inside was a lot more bumby than the outside, that's why Hill choose a line much more in the outside. Senna in contrast was taking the more risky, but slightly faster inside part of the corner.
Schumacher said that even in the lap before it looked to him as if Senna was close to losing controll in Tamburello.
The next lap, Senna was simply unlucky and the downforce stall happened. Maybe one lap longer, a little change in tyre pressure and everything would have been fine. But in that one lap, the car simply lost downforce in Tamurello and there wa s nothing Senna could have done from there on.
The fact that Senna then was killed by some part going throuh his helmet makes the events even more tragic of course. It was just a combination of bad luck.
Senna of course has some guilt, too. If he took Hill's line, nothing would have happened most likely. But if he took Hill's line he wouldn't have been Ayerton Senna. Senna was pushing the limits until his very last seconds.
That's why i totally disagree with all those conspirency theories" Senna knew something"... I call it bullshit.