That is my view now in that Dunk won the tackle and the player went over as a consequence of the follow through from the tackle. There was no hesitation from the ref in awarding the corner but asking the lino so if anybody was wrong it was the lino more so than the ref, but I dont think that...
At the time I thought no, watching the video I changed my mind but on reflection was the ref correct that Dunk had won the ball, didnt he give a corner which helps the refs view. I have seen them given for less obvious fouls though. So perhaps a little lucky, which you get when near the top...