“I didn’t expect to have to make a decision that tore me apart like this but Survivor will do that to you," she confessed.
"At the end of the day we are all out there playing to change our lives and Harry, Baden and I made a choice that was strategically right but morally painful. So send me all your snake emojis and know that I get it,” she wrote on her Instagram account.
But while Pia has copped a fair amount of flak, other Survivor fans stood up for her on social media, reminding her critics that she was doing what she had to to win the game.
"#SurvivorAU the people in Pia’s Instagram comments are disgusting. Do something better with your time than harass someone for something they did on TV," one fan posted to Twitter.
"I guess I'm naive but I did not predict the barrage of abuse that Pia would receive after this vote. Some fans are so dumb and rude #SurvivorAU " said another.
"The level of vitriol directed at Pia is absolutely gross. It’s a game, she made the best move for herself. Harry and Baden also voted for Luke but not one nasty comment directed at them. You salty people need to check yourself #SurvivorAU" another fan tweeted.
Tune tonight for the final episode at 7.30pm on 10 and 10 Play where Pia, Harry and Baden will battle it out for Sole Survivor status.
Jonathan LaPaglia will announce this year's Sole Survivor who will win a whopping $500,000 in prize money.