DMK leader A Raja rejected a clause that could have shielded the UPA government against allegations of "fixing" the scam-tainted 2G licences, former telecom secretary Siddharth Behura told the Joint Parliamentary Committee on telecom on Tuesday. Behura's testimony, pinning the blame for the 2G allotments on Raja, seems to indicate that the former secretary has parted ways with his political boss who may have to defend himself against the charge that he willfully overruled his secretary's cautionary advice.