The crowd roared again a moment later when James' pass sailed through Bosh's hands for a coffin-nailing turnover with 31.9 seconds remaining.
The exhalation turned into exhilaration for Jazz fans, who've seen their team win two nail-biters against Miami in the past two seasons.
"Our guys," Corbin said, "showed a lot of character and poise to be able to weather the storm and pull ourselves back together and get a win here against a good ballclub."
The Jazz trailed 18-12 early on, but things quickly changed for the better after a Randy Foye 3-pointer ignited a 10-0 Utah run.
DeMarre Carroll then scored 11 of his 12 points in the first half while playing his Junkyard Dog game. Hayward got hot from outside. And Big Al provided more offensive firepower as Utah went on a game-changing 38-15 spurt.
The Jazz took their biggest lead at 84-63 on a Millsap layup with 1:19 remaining in the third quarter before Miami's crazy comeback.
"It was low energy. Low energy against a team like this on their floor with this amazing crowd. Can't play with low energy," said James, who had another big-scoring night against Utah with 13-for-19 shooting to go with six assists, four rebounds, three steals and two blocked shots.
"We gave them a little bit of everything. Start of the game, they hit some 3s, got some paint points."
"It was a great comeback coming into the quarter. Our guys really played their hearts out, really competed," Miami coach Erik Spoelstra said. "Everything has got to go right if you are down 20, but we gave it a shot."
On this night, however, the Jazz managed to deliver one final knockout blow, allowing their fans to smile after catching their breath.
"It was huge, man. Huge. That was a huge win," Williams said. "You've got the defending champs come into your building and the way we played on the defensive end and shared the ball on the offensive end, I just think it was huge."
NOTES: The Jazz had 19 second-chance points, while holding Miami scoreless in putback opportunities (0 for 6). Big Al had his 19th double-double. Utah made its first nine shots of the second quarter, during which it outscored the Heat 29-19. Utah outrebounded Miami 40-23. The Jazz only shot 47.4 percent after hitting a sizzling 67.6 percent in the first half.
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