I haven't been able to watch it. First your frequency page redirected me to youtube, which wanted me to log in. I hadn't done that in awhile and had to go through the process of resetting my password. When I had that done I went back and the next attempt of going to youtube through your frequency page said that the video had been removed?
It would be interesting to see this clip if it, as Michael suggested, shows some technique from some of the Ku Lo Pin Sun San Sik. You see, I have studied some Pin Sun in the past. What little I have seen of Lee Shing WCK in the past had some things that did look familiar from a Pin Sun perspective. I distinctly remember reading that Lee Shing started out in Pin Sun WCK. Now Michael backs that up. I don't know the internal Lee Shing WCK politics, but I don't understand why your branch of the family would want to deny a Ku Lo Pin Sun WCK connection. What's wrong with that?
I get frustrated with all this "super secret Ninja" stuff in some lineages. Its an archaic way of thinking. It can only lead to confusion and hard feelings. Why not show your weapons openly? Are you afraid someone will learn your super secret techniques and defeat you in a challenge match?
Why not talk openly about Lee Shing's influences outside of Ip Man WCK? Do you think its going to hurt his reputation?