Revealing mistake: When the Senator is being killed by Travolta in the river, we can see some shots of his assistant before his car explodes. If you watch closely just half a second before the frontal shot of the explosion, you can see in the driver's seat a dummy with a green face.
Revealing mistake: At the end of the car chase scene between the TVR and the SUVs, the last SUV crashes into a wall, explodes and flips over into a diner. During the explosion you can see a piston pushing the car over.
Revealing mistake: When Don Cheadle slams the lawyer against the wall of the interrogation room, the wall wobbles and shakes.
Answer: He wants to dupe everyone who investigates the problem into thinking it was an internal error, rather than a virus. Doing so would lead them away from Stan, and he would get away with the attack.
Ryan Andersen