Indonesian players should be forget this result and focus for upcoming match against China and so far China is the weakest team in group C because until 3 matches they still unable to collect points and hopefully this time Indonesia can beat China and gets 3 points from this match
I'm pretty sure that's what the captain said in one of the interviews. He said in football you can't expect fairness to win you the game, so they need to move on and prepare for the next match asap. I think the chance for them to go to the next round is still high anyway since they will face Bahrain again in Jakarta. Who knows maybe they'll get another 3 points from Australia or Arab too, or steal another point and finish with 10 points or so. It's still too early for them to give up.