A Maryland man who was planning to put his home on the market died in a massive explosion that destroyed the house and also killed a utility contractor as firefighters were heading there to investigate a reported gas leak. The body of homeowner Ray Corkran Jr., 73, was found in the rubble of his house in Bel Air, about 30 miles northeast of Baltimore, hours after it was blown apart by the blast around 6:45 a.m. Sunday, according to reports. “He was actually preparing to list his home for sale today. He was actually prepared to meet with a realtor today and list that home,” Master Deputy State …