SAN DIEGO — Because of their Spanos problem, the Chargers’ upcoming hire of a general manager — moreso than the hiring of the next head coach — will most affect the club in the years ahead. It’s about proximity. The GM works closest to team owner Dean Spanos and President of Football Operations John Spanos. The coach works below the GM and further away from the Spanoses. The GM will have to manage the Spanoses, not just the folks below him. Sorry, dreamers, the solution to the Spanos problem won’t be the Spanoses selling the Chargers. One, every NFL club prints money. Two, Dean delights in usi…