In that tutorial, if my memory is good, it is about vibrations/shaking along X, Y, Z on the camera position. It's along space 3d-positions. Hum... I have not a good answer to you, But here my 2 cents with a trick... To make "fake-nice-dirty-classical vibrations" it is to have them along the orientations (pans) keys! So here the trick (I used that way a lot in the past): the camera has its orientations keys created by an animated blind (not rendered) objects! A moving cube. You have many positions keys with that cube. That cube give the orientation to the camera with its own path. Now let's put some vibrations on that cube. You'll see...that work!
Hope that's help.
Philippe Bouyer