In July, when Manhattan federal district court judge Lewis Kaplan ruled that prosecutors had bullied KPMG over legal fees, the government’s tax shelter case against the accounting firm imploded. For tax lawyer Raymond “R.J.” Ruble, the case may just be heating up.

Kaplan dismissed all charges against 13 former KPMG executives and employees, but Ruble, a former partner at Brown & Wood (now Sidley Austin), still faces trial in October on 43 counts of tax evasion and conspiracy to defraud the Internal Revenue Service. Prosecutors charge that Ruble worked with KPMG to cook up and sell illegal tax shelters while hiding a portion of his earnings from his firm and from the feds.