I'm in accord with Steve and Ian. We've discussed this whole issue many times in the past, most often when Geof Shack was a frequent contributor.
From all accounts, it does seem like Faz/Marz got the gig on a certain premise (as Steve describes even using old photos as a baseline for what the scope of the project would be, then changed horses in midstream with on-the-fly stylistic changes). And, to read the quote in Tony's LINKS article, it would point even stronger to a certain mindset of Marz putting himself ahead and above the original architect Thomas-Bell whom in this case weren't just some dirt pushers, but among the great historically significant creating one of the most distinctive and compelling styles af all times. Riv is Thomas's "crown jewel" as Ian rightly observes. I think that the owner and members do have a certain debt and responsibility to care for a jewel of such prominence in the world of GCA.
To say it is their money and they can do with it as they want is technically correct. But, if someone bought them out, and excised the "tumors" and restored the graceful lines, the current owners would still be the goats, and whoever restored it faithfully would be the hero.
I don't know all the inside baseball of the owner ignoring Geof in all of his advocating for faithful respectful restoration, or remodelling in sympathy with Thomas's style to bring the course up to date for the competition. But, it has always seemed to me that the owner didn't give two ships about the integrity and respect of what was on the ground there (even though the indication is that Faz/Marz originally gave indications of following old photos). And, with Geoff or Lynn being long time members and Geoff being so committed to study of the architectural aspects, and to ignore him was crude, IMHO. Unethical as defined may be too strong, but insensitive sure fits in my book.
BTW, thanks to Steve and Ian as they have stepped up with opinions and facts many GCS's shy away from vocalizing unfortunately in fear of members and owners too often trying to squash honest POV.