There wasn't a conspiracy...just a MASSIVE cover-up.
Someone Jerry rigged the steering column. It was cut and welded together again. Imagine that...welding a steering column that has to withstand that amount of pressure!
Someone should be in jail...either the idiot that welded it or the idiot that ordered it done....One of those people is VERY likely Patrick Head. But we'll never know because Williams lied and were evasive through the whole thing.
Well, apparently it was a change that Senna requested, and that they could only do by welding at relatively short notice.
Conspiracy over.