Trailing 20-0 with seven minutes remaining at Suncorp Stadium, the Storm had Papenhuyzen taken from the field on a medicab after he came reeling out of a tackle in agony.
With Payne Haas and Pat Carrigan providing the muscle and Reece Walsh the magic, the Broncos snapped a 14-game losing run against the Storm to earn themselves a week off.
Early mistakes by Nick Meaney and Eli Katoa put the Storm under serious heat and the Broncos capitalised through Kotoni Staggs, who left four defenders in his wake on a powerful charge to the tryline.