“Things are being taken completely out of our control by people not being able to make simple decisions,” Challinor told Radio Manchester.
“I get why there is a scramble to ultimately get robots involved and stop human error because that can’t happen.
“People are putting tens of millions of pounds into football and things can be dictated by what happens with someone with a flag and a whistle and that’s a bad place to be.”
Challinor praised his players for channelling their frustration and sense of injustice into turning the game around to lead 2-1, before they were pegged back by Kelman’s second goal of the game late on.
“That [Orient’s first goal] was always going to be a talking point at the end of the game and you have a choice, whether that becomes an excuse or whether that become a motivation,” Challinor said.
“If you feel an injustice what’s the best way to try to overcome that injustice?
“We’ve put in a slog to get 46 games through a league season and countless cup games to be in this position. To look for, or accept, excuses or make an excuse with 45, 50 minutes of a season still to go in this game would be daft.
“You’ve got to be bigger than that. We’ve shown real resilience or courage over the last five or six weeks to come from behind and all that work can’t be for nothing and credit to the players for performing in the manner they did second half.”