Just trying to muddy the waters there Adam. Nobody is talking about either side collapsing or pulling back to milk a penalty. The issue is simply the Reds scrum as a unit takes a couple of steps to the left and then pushes straight. It is disingenuous of some to suggest the Force LHP is strong enough to push Tupou and the rest of the Reds front row off their line.
i can tell you right now 'couple of steps to the left and then pushes straight' is not a front row tactic, it is not possible or practical for a LHP to try and step around a THP disengage and then drive straight into thin air, that would be counterproductive.
What you are seeing in those videos, and i said it during the Force game is Tupou turning in to drive a wedge between the LHP and Hooker, and Robertson driving in on Tupous side. The other side of the scrum is been pushed to the left, they aren't stepping to the left as a tactic, you can see this because their feet chase the angle of their shoulders. All the pressure is coming from the other side.
And to address your comments about Tate's try, the advantage was rightly awarded to the Reds because Robertson went to his knee soon after the engagement, before the scrum even started twisting.