I don't see how, if you feel you can stop a goal being conceded whilst also not risking another goal scoring chance(penalty)and getting a red card, that's again the natural, instinctive action to take. If you think you cannot prevent the goal any other way though, you'd have to be a robot to do nothing at all.
Phil Neville, Ashley Cole Suarez, Crouch, and Cattermole are high profile examples in recent seasons of this.
All these cases are of instinctive, unplanned cheating. Alonso, Ramos and this French league lad that's been brought up are all cynical, premeditated examples of cheating. I'd say instinctive cheating is more forgivable than a concious effort to cheat the whole concept of fair play.