This is sad news. RIP Curt.
My tentative 'connection' to Curt is that I own a Star Wars cabinet that was once his. Quite a few years ago, Curt generously gave it to another forum member here, and I later took it on as a restoration project. (Curt's original thread link is below!) When I was picking up the machine, I was told 'hey, this was owned by the guy who designed the Atari Flashback 2!'. I have since restored Curt's cab with the original Atari hardware. Anyway, I just wanted to pay my respects to a generous and talented member of the community. You will be missed!