Yes I loved this place too! Although it was pricey, the authenticity of the food was second to none in HK.
Fortunately I have since found out that the Head Chef opened his own restaurant in TST (a 5 min walk from East TST MTR station.
The restaurant is now called Ginza Okura, located inside the Oriental Crystal Finance Centre on Chatham Road on the First floor (107-109 Chatham Road South, Tsim Sha Tsui, Hong Kong).
I recently went there and the food was still as good as ever! Definitely would recommend a visit if you miss the old Ginza!