OK, have a suggestion... I was just in the Showdown and was -5 after the first 9 holes. Holes 10-12 were on Pinehurst. I parred the first hole and my opponent, a TM, dbl bogied..on the next tee box we were both just spinning...I send a message "are u still here?"...no reply....then screen says Pause while reconnecting....on new startup, opponent shows up while game loading but his countdown going down and he not coming back...figured he up and quit, not forfiet...so...as I was afraid to lose game and end up with 3 bogeys or something, I closed window of game on windows. I then reloaded game and the screen was the normal WGT start up, not the showdown....
When I went to the showdown screen, it had not recorded anything other than me having played 9 holes. I started the showdown again and was starting all over, fresh, on pinhurts as the 10-12 Showdown holes.
So, it seems that, if you opponent bails, close the game and restart and there should be no harm to your score and progress.
Hope this helps someone.