At a casual club where I play, one guy insists on playing five minute Blitz games (most of us play untimed games otherwise). Since a player's move isn't complete until they press their clock, he claims that touch move doesn't apply. As such, he sometimes picks up and moves a piece, but then takes the move back when he realizes it would be a mistake, or thinks there is a better move - all before pressing his clock button. Sometimes he ends up moving a different piece than the one he originally touched.
Thus I ask: Is his interpretation of the rule correct, i.e. in Blitz, can a player touch and even move a piece but then take that move back as long as they don't press their clock button? Or is a player still required to move a piece once they have touched it (clearly intending to move it)?
Update: Folks seem to be focusing on the "casual" nature of the games I mentioned. However, I'm more interested in the rules aspect of this question.