Karnataka BJP chief BS Yeddyurappa on Saturday lashed out at Congress party's chief troubleshooter in the state DK Shivakumar as he made efforts to contain the fallout from the resignations of several legislators that spelled fresh trouble for the government. "People are watching the way DK Shivakumar is behaving. He tore resignation letters of some of the MLAs inside the Speaker's office, who had gone to resign. It is condemnable," Mr Yeddyurappa said.