A squabble between lawyers has put the brakes on John Denver's drunken driving trial in Aspen, Colo. The case was halted Thursday after defense lawyer Walter Gerash accused the prosecutor of leaking results of Denver's blood test. The judge suspended proceedings until he could decide whether to appoint a special prosecutor. Denver was charged with misdemeanor driving under the influence after crashing his Porsche into a tree in Aspen last August, while he was on probation. Denver had pleaded guilty to drunken driving in 1993.