Actually, by then I believe Our Clint was an OFer, and that he stopped pitchng in 1950.
My Dad played with Clint Hartung on a military team in Hondo (Hondo Hurricane --- geddit?), and Clint was kind enough to send Dad a team-signed ball from the 1951 Giants. Some pretty tasty names on THAT ball, I can tell you!
The bigger question would be how Clint lasted as long as he did....for all his success in baseball prior to MLB, he was (shall we say) disappointing....