I'm sorry, but Larry Evans wasn't exactly known for being careful with facts or corrobating evidence. Furthermore, there was no evidence of Soviets throwing games against each other at the time. No qualification tournaments had yet been played at that stage. Just give it a rest, it's a big load of cobblers. A conspiracy theory without foundation. Reuben Fine had given up professional chess to pursue a career in academia at least a couple of years earlier, and for that reason he decided not to play in the 1948 World Championship Tournament. Kenneth Harkness wrote the following in Chess Review #12/1947 in an article entitled 'World Championship Forecast': 'Our own Reuben Fine could bring home the bacon. If he could work up the flaming enthusisam that swept him to victory, with Keres, at AVRO in 1938, Fine could finish on top. However, the No.2 player of the Uniled States has been out of master competition for a long time. It may be too much of a handicap.'
There is a discussion in the Reuben Fine wikipedia entry concerning why he declined to participate in the 1948 FIDE Championship match-tournament. He was, at the time, working on his doctorate at the University of Southern California (in Los Angeles). However, in 1947 he played a training match with Herman Steiner of Hollywood (a strong master and US Champion, which Fine won 5-1. My statements about his motivations echo the recollections of GM Larry Evans - a top young US player at the time.
Btw - Steiner wrote the chess column for the Los Angeles Times then, and stated that the match was intended as a "tune up" for Fine's participation in the 1948 event.
The watch results were 4 wins an 2 draws in favor of Fine.