Yes, exactly that, Ed. It has a sort of snap ring that holds it in place from the flywheel side against the clutch fingers.
Bruce, I don't understand the dislike of hydraulic clutch mechanisms. They are very widely used and more reliable than those cables that are always breaking. I've had my fair share of many broken cables (3 on one Scirocco alone) over the years. Honestly the cable arrangement on early Spyders was a bit Rub Goldberg with the direction-reversing pulley.
I've had only two hydraulic failures. One was the slave in my 5000CS quattro. It was almost 20 years old at that point. The other was the Neal slave in my Spyder, which merely needed to be cleaned. If you flush the brakes and clutch fluid every two years as recommended it's a non-issue.
Ed's problem is one easily solved and is merely a parts compatibility/error having nothing to do with actuation method.
FYI, your Subaru Spyder trans has a master/slave arrangement.