William Wesley Styron was setting up for the pop groups' joint concert at the FedExForum in Memphis in June last year when he allegedly stumbled and plunged 13 feet to the ground.
In his lawsuit, Styron claimed he fractured his skull and sustained a "traumatic brain injury" in the fall but the bands insisted the accident was his own fault for failing to look where he was going.
Maryland District Court Judge J. Frederick Motz ruled in favor of the musicians last month, stating responsibility for the accident lies with the company that hired Styron, Crew One Productions Inc.
Judge Motz dismissed the lawsuit against the bands.
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