I'm a little skeptical, but hey anything is possible.
One of the certification requirements for the airplane is the ability to operate normally in the presence of external EMI - especially critical systems such as flight controls and propulsion.
The EECs and all of the related wiring is heavily shielded to prevent such an event. It's possible that the ground on a shield or the EEC itself could be disconnected which could allow a stray signal to interfere with system operation.