I don't recall any specific instances of the Jedi being manipulated, but still just control the flow of information and you control a person's perception of reality and therefore how they react.
the clone wars???
hell there were sith infiltrators in the order itself manipulating the jedi, they arnt stupid but they arnt to bright either.
the star cabal worked their stuff by being subtle, i believe that the motion to disband II was something they themselves said was risky but they felt that they had to in order to try and stop cypher nine.