Hey, that may be Keith Sparkman's first mention on this board. I worked with him 23 years ago at Piping Rock and he is still going strong ... however, he didn't work at the TPC at Sawgrass the first time around, because he started with the Dyes about the same time I did, at Austin Country Club. (Keith DID do a lot of the finish work during the renovation last year, though.)
As to Michael's question, you may not be prepared for the answer.
Most of Pete's work back then was shaped by guys with little or no prior experience in golf course shaping! He would only bring a construction foreman to the job (in the case of the TPC, it was David Postlethwait), hire local construction companies, and try to explain to their equipment operators in very rough terms what he wanted ... i.e. "build me a house pad over there" or "go f up that side of the green" [seriously], and then Pete would come back and work with them some more to add golfing features and green contours and the rest. So, the shapers contributed some things, but pretty much randomly ... the design is all Pete's, with a fair amount of input from Deane Beman and of course from Alice.