HOUSTON — It was sealed with one more pin-balling run by Blake Corum, who caromed off a defender, slipped between others and ended up where he usually ends up, in the end zone. It was the fitting snapshot of a special season, as the Michigan Wolverines bounced past everything in their way, completing a crazy journey from pain to the pinnacle. This was the only way it could end, with a punishing defensive effort and more clutch runs from an offense that’s proficiently, viciously methodical. Michigan won its first national championship in 26 years, dismantling Washington, 34-13, Monday night at …