Also as it was in their half Sale had to be mindful of not causing a penalty, which potentially might have cost them a losing bonus point.
Very good point, had not thought of that.
I have wondered if some refs are more likely to ping than others when a team runs the clock down, and if it is something teams look at.
Hopefully, what they're looking for is a fair challenge for the ball so if the team in possession go straight to ground and pile players on top of him to seal off then yes, they'd penalise you. Likewise though, if the defending team are a little too eager and creep offside they'd also be risking getting pinged.
I say hopefully because it was CMK, Heaven only knows what he looks for, it can be a bit of a lottery. Did anyone else notice that according to him there is no need to throw straight into the line out? Some of Sale's line out throws were laughable.