One of the things this episode highlights is the different ways countries see and value rugby - this goes for viewers, players refs and coaches.
For the breakdown, the Kiwis and Saffas go by Paarls maxim "It'll sort itself out" i.e. if you're able to stick your hands and head there without getting them broken by Bakkies or Brad, then fair's fair. The dominant side gets the benefit of the doubt - if you're counterrucking and end up on the wrong side, so what. It's all about the contest. IMO Mark and Bryce Lawrence ref to this.
The Aussie viewpoint - and I think Bob Dwyer is a great example of this thinking - is that there are rules around the breakdown that need to be observed if a game isn't going to fall apart and reward negative play. You can't just flop on the wrong side, even if you claim it's a counter-ruck. It was no accident you ended up curled around the ball and a ruck isn't over when you say so. IMO Stu Dickenson refs to this (as does Wayne Barnes, usually)
No wonder then that Ritchie's "borderline" behaviour ends up on the wrong side of Stu. Maybe also this isn't usually a big problem because Stu's not usually reffing him vs an Aussie team.
As an Australian rugby player and supporter, it's clear where my bias is on this topic (see my Avatar!). I don't think Richie - and in last sunday's game I though Whitelock was worse - is particularly subtle any more.
As for final incident, most importantly Stu had called hands off, the ball wasn't clearly out (see how long it took McCaw to wrestle with it) and Digby is still standing at the ruck, bound. Also, McCaw doesn't strictly even come through the gate, and Franks has gone off his feet (touch and go - in wrestle with Kev). As Bray said, it's not open and shut, but Stu was technically right.
Finally, one point I've always had to concede to our Kiwi bro's like Bullrush, is that you should be good enough to take the ref out of the equation, like the ABs have been and the Wallabies haven't. Looks like the Saders just weren't good enough to take Stu out of the equation.