So concerned were the squad about what former manager Carlo Ancelotti repeatedly branded the "bad moment" that they held talks to discuss it towards the end of last season.
And although Terry refused to reveal the verdict they had arrived at, he insisted on Thursday it was one which would prevent history repeating itself under new boss Andre Villas-Boas.
"If ever that does arise again, we can snap out of that really quickly," said the England captain, speaking at the launch of the 20th Premier League season.
"The sign of a true champion is to bounce back if we do suffer a defeat and get together and pull together.
"I think we realised where we went wrong. That stays private between us.
"You're going to lose games throughout the season - it's how you deal with it."