Speaking as a referee who is quite happy to manage (with a quiet or not so quiet word) a 'FFS Ref!' if it isn't shouted - or even an immediate 'Oh F off' after a decision it is clear that we all deal with these things differently. I'm quite happy to take the criticism that such outbursts should always result in cards but will also maintain the view that if I can manage things in a stepped fashion that is far more preferable.