The heavy metal band were forced to postpone dates on their North American tour by almost three weeks as singer Corey underwent "unplanned spinal surgery" and he later explained to fans on Twitter that he had "basically" broken his neck and needed to have a disc replaced and work done on his vertebrae.

Corey returned to the stage at the Bridgestone Arena in Nashville, Tennessee on Tuesday night with a neck brace and told the crowd it felt weird performing with the new accessory.

"Let's address the elephant in the room: I f**king broke my neck," he said, according to "But there was no way I wasn't coming to Nashville to do this show.... It sure is weird playing with this pillow on my neck."

Before the show, Corey posted a selfie on Twitter and wrote in the caption, "1st day back: Nashville. Haven't smoked in 2 months. Broken neck, weird scar. Not enough coffee. #timetowork"

He had previously told fans that although doctors had allowed him to return to live shows, he wouldn't be allowed to headbang or jump around on stage like normal. He added, "But I'll sing my a** off."

The postponed dates were rescheduled to August (16).