Meet the NFL’s luckiest owners: Dean and John Spanos. Four years after they stumbled into Justin Herbert, with whom they nevertheless have won no playoff games and posted a .456 winning percentage, the fortunate Chargers leaders appear to have a real shot at lucking into Jim Harbaugh or some other winner who’s led a franchise to the Super Bowl. But, the Chargers being the Chargers, there’s a catch. The Spanoses will have to get over themselves in order to hire someone as credentialed as Harbaugh. They’ll need to loosen their tight grips on money and power. He’s not another rookie head coach, l…
