If it was just the vertebrates that broke, and not his actual spine, he should be fine. But if his spinal column was damaged, he may have some sort of paralysis.
Quoted for truth. The drummer in my old band fell off a roof and shattered two vertebrae. EVERYONE feared the worst but he had no spinal cord damage and eventually recovered to around 90% which is pretty remarkable. (The only lasting impact was loss of mobility around the broken vertebrae.)
He was back to drumming before the last cast came off which was even more remarkable.