Just before the start of this year's baseball season, the group representing workers who clean up the peanut shells and plastic beer cups at Oriole Park at Camden Yards thought they had reached a breakthrough on getting higher salaries. advertisement advertisement Not only had the United Workers Association persuaded the Maryland Stadium Authority to bring in a new contractor that pledged better wages and better treatment, the workers said that Orioles owner and labor champion Peter G. Angelos had personally phoned the group to say he would help. "I thought it was just a tremendous thing that he was willing...