Yes. What you just saw was SIXAXIS-controlled breast jiggling. I wouldn’t be surprised if at one point in the game that turns out to be a useful gameplay mechanic.
As for the shaking, well, the guy in this game ad takes care of it for us. All I can say is I really don’t wanna be sitting next to this guy on that couch while he’s playing Sigma. Think of all the stuff that could come flying straight at your face!