Fascinating. Sounds totally 100% Hank to me, from the off. I would agree that it is very similar to his style of playing in 'Breakthrough' - but the chops are sadly in lesser shape. As mentioned, he's got the ideas for sure but struggling to get them out. This is a aspect of Hank's recordings that for me really started to become apparent with the 'Thinking Of Home' session onwards.
I remember the NorthSea Fest back in 1984/85 actually advertised in the jazz press a forthcoming appearance by Hank - but sadly it never happened. I'll have a look at back copies of Jazz Journal from that era to see if I can find the advert, if I get some free time.