Witnesses said a metal pin used by the 31-year-old Morningside man to manoeuvre objects became a spear and embedded in his eye as his chair crashed more than a meter to the centre's floor.
QSAC faces criticism for not placing a proper barrier in front of the special wheelchair podium that would have prevented the accident.
The incident happened about 10pm as more than 45,000 fans danced to the legendary Aussie rockers during the second of their two sold-out Brisbane shows.
The man's friend moved his left hand when it struck the joystick and the wheelchair shot forward and fell end over end.
"He was shattered, just devastated by what happened," a person said of the distraught mate.
Paramedics immediately attended the quadriplegic, a former truck driver who became paralyzed after an accident.
A Princess Alexandra Hospital official said the man was out of intensive care yesterday but was still in a serious, but stable condition. He had no information on whether the man had lost an eye.
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