Sorry, that is incorrect. Cyanide blocks the place where oxygen can bind to protein complex IV. If oxygen can't bind to protein complex IV, then there is no way for the electrons to exit the Electron Transport Chain. Adding electrons to oxygen in the formation of water is the last step.

The model will appear to run for a while, but you will eventually see that all of the molecules have electrons that they can't get rid of, and no more protons will move across the membrane.