Whatever was ailing Joe Perry has apparently been remedied because the Aerosmith guitarist is getting back in the saddle. (We couldn’t resist.) Perry, who collapsed backstage a few weeks ago while performing with The Hollywood Vampires, rejoined the band for a show Friday night in California. Alice Cooper, who handles vocals for the Vampires, tweeted the news. Perry, who’s 65, was hospitalized July 10 after becoming disoriented and then falling down at a show on Coney Island in Brooklyn. Initial reports suggested Perry had suffered a heart attack, but that appears not to be true.