They definitely remastered it. The best version they released though was the HK version DVD that was released a few years back. The youtube upload is...
I encountered that problem with THE SMILING PROUD WANDERER 1984 (scenes without audio). I wonder if that's due to TVB not having copyright clearance...
I think ZWJ would easily share 9Yang if his uncles asked him nicely, considering how he reveres them. However, learning 9 Yang wouldn't benefit them...