Too Much Too Soon has a free "Flashframe" transition that does this better than any fake we could come up with, and it's "free". Man, the look of shear terror in my students faces when I try to show them how to keyframe the 3-Way CC in FCP, dude, I'd stay away from that... LOL!
Yeah, keyframe some jump in the movement during the transition section. Good idea Gretta.
I think TMTS's "free" transition would be a much more realistic effect and much easier approach.
http://www.mattias.nu/plugins/