Goof in Season 4 Episode 14?

After Shawn, Gus, Juliet, and Lassiter run into the think tank bunker to find it empty, they realize that Snowden was a fake and in fact planning to assassinate Bonaventure. In the next scene, all four of them go to Bonaventure's hotel to warn him that he is in danger. The goof is that Shawn tells Bonaventure that he "psychically" felt he was danger while Juliet and Lassiter are standing next to him. But wouldn't Juliet and Lassiter realize he was a fake psychic because all four of them figured it out together beforehand?