Cohl says: "His back's fine. They've taken the bolts and the nuts and everything out."
Tierney fell 35 feet into the orchestra pit in front of a shocked preview audience when his safety harness failed. The 31-year-old suffered a fractured skull, a fractured shoulder blade, four broken ribs and three broken vertebrae.
His father had said from the family's Portsmouth, N.H., home he couldn't wait to resume performing.
The show is on hiatus while a new creative team reworks it.