There needs to be some consistency here. I would like to see players encouraged to make sure that if they intend to go for an intercept, they MUST try to catch the ball (like Nehe Milner-Skudder on Saturday - he got a hand on the ball and never lost contact with it. Soft hands is the key to dong this successfully.
For mine, if the player just sticks his arm out and knocks the ball forwards (hard hands) with an intention to regather, whether he knocks it up or down, then he is taking a risk. If he fails to regather the ball he's getting pinged for a deliberate knock forward, and depending on where and when it happens, that could also mean a yellow card and a penalty try. The only exception I would make is where a player does this and is then tackled before he can regather.
I don't have any problem with the referee and TMO decision in the clip (and that ain't because I am a Tasman supporter, I had no problem the the later red card against the Tasman player either, it was stone cold red all day long)
And that brings up another thing that really, really pisses me off. Red carding tip tackles has been around for several years now. How stupid are some rugby players? Why are they still grasping opponents below the fecking hips and lifting them off the ground when they MUST KNOW that there is a very high chance of it going wrong. There is NOTHING that this technique can achieve that cannot also be achieved by grasping them ABOVE the waist, NOT LIFTING them and dumping them on their back.