Robert Pollard can’t have much to prove. Perhaps the first “ex-indie rock frontman” since Morrissey whose name doesn’t require such an epitaph to be recognized, the former Ohio schoolteacher has done alright for himself through Guided By Voices’ twenty-year career. Following his decision to call that band quits, GBV’s departure earned a teary-eyed send-off from no more stoic a hipster rag than Pitchfork. Hitting the studio almost immediately thereafter, Pollard has released a few sort-of solo albums since 2004, and escaped with his …