Haddin said with England on 55 for two at lunch on day two, bowling coach Craig McDermott had stern words for what was shaping up as an unthreatening Australian attack.
And the team talk had the desired effect as the fired-up Johnson, finishing with four wickets, led a rout of the England batsmen who slumped to be all out for just 136.
Australia returned to the crease to be 65 without loss at stumps, a lead of 224 with 10 wickets in hand and a high chance of extending their 25-year unbeaten run at the Gabba.
"So we came back after the break... And Billy (Craig McDermott) told the bowlers in no uncertain terms where he wanted to things to be and we came back after the break and got our lengths right."
Haddin said Johnson, back in the Test team for the first time since March, was back to his best after his raw pace and accuracy unnerved the England batsmen.
The left-arm paceman regularly clocked speeds in the upper 140 kilometres (90 miles) per hour and finished with four for 61 off 17 overs to restrict the tourists.
Asked whether Johnson's spirited innings of 64 had helped him bowl with renewed confidence, Haddin said: "I don't think he's had too many problems, he's a 200 Test wicket-taker.
"I'm comfortable with where Mitch is at, it's you guys (media) who talk about it.
