Meh. The whole defense looked pretty shitty. But they weren't playing Utah State. The Super Bowl Champs, Aaron Rogers and that receivers corp, will make a D, especially a Safety, look silly.
People here are pissed at the defense in general, and it seems Harper is getting the brunt of it. Yeah, he got burnt on a TD or two, but he was still the defensive stat leader (9 TOT, 7 Solo, .5 Sack).