I've been in contact with a friend, an acquaintance of Tony Hwang, who played a small role in the sale of Huet. Here's what he had to say:
As a fan of Huët's wines but which I knew to be in some disarray as a company, I thought that Tony - an unconditional fan of sweet wines - would be a good person to take over. However, his track record - firstly with Szépsy and then with Pinguet makes me suspect that either they, or he had unrealistic expectations of the other. He is/was without an extremely tough cookie, and will have made it perfectly clear that he expected the companies in which he invested to make money. If they didn't make as much as he expected, then either his expectations were unrealisable in practice (especially given the recession) or else his managers didn't believe he'd be as tough as he said he would. Certainly, when he has [sic] his bust up with Szépsy, Pinguet could do no wrong.
[...]
The comments about making more dry white, on the other hand, are entirely consistent with what happened at Királyudvár. Without going into a long history lesson, Tokaji Aszu is expensive to make partly because of the rules relating to fermentation times. He first of all started making a number of cuvées which did NOT have these long delays, made from botrytised grapes. He also made a dry Furmint based wine which at one time caused a sensation in terms of quality. And now we hear that he and Pinguet may have fallen out over the proprtion of time and effort going into dry wines. with Pinguet apparently wanting to put more emphasis on the sweet wines for which Huët was rightly famous. What I don't know is which came first, the chicken or the egg. Ie did Tony walk away saying to himself "I've more important fish to fry than to fight with Pinguet" (which he might well have had) - installing his kids to take over, or did he feel that he could no longer afford the time and effort in Huët because of increasing pressure of work in other areas, and in installing his children, unwittingly cause the inevitable ructions which could be down to something as silly as the fact that they don't necessarily share his passion for sweet wine.
He's currently trying to get some comment from Tony Hwang about this whole kerfuffle.
Mark Lipton