Shinedown bassist Eric Bass has been forced to leave the band’s current tour after recently injuring his back. He is being temporarily replaced by Josh Stern, who previously filled in for guitarist Zach Myers when the latter became a father last year. Myers said in a video message, “Unfortunately, Eric had to fly home last night — very uncomfortably, actually . . . His back is very messed up. He’s actually at the doctor right now, and we’re going to see what the next steps are. We’re very sad he’s not gonna be with us for the next three shows, but we are glad that our friend Josh Stern was very quick on the draw to come out here and fill in.” Bass addressed his back injury in an Instagram post on Wednesday, writing, “What a difference 48 hours makes . . . Gotta get healthy again. Not sure if 44 is the new 24, or if 44 is the new 84. Check back with me in a week and I’ll let you know.” Shinedown kicks off a summer tour on June 21st with support from Badflower, Dinosaur Pile-Up and Broken Hands.