Johan Renck doesn’t think ‘Spaceman’ could exist without Adam Sandler’s “formidable and amazing” performance. The Swedish director cast the ‘Happy Gilmore’ star as lonely Czech cosmonaut Jakub, who befriends a giant telepathic space spider while on a solo mission in his new movie – which is adapted from Jaroslav Kalfar’s novel ‘Spaceman of Bohemia’ – and while he found much of making the film to be a “frustrating” experience, his leading man’s work made it all worthwhile. Johan told The Hollywood Reporter: “When I look at this film now and I look at Adam’s performance, it’s phenomenal. He was …