Kernrechtsfrage
Whether the limited waiver from lawyer-client privilege for the lawyer's defense was lawful.
Extrahierter Entscheid
The limited waiver was lawful because the client had already initiated criminal proceedings against the lawyer and thereby waived confidentiality to the extent necessary for the lawyer's defense.
Extrahierte Begründung
An attorney may be released from secrecy when his own interests in defending himself outweigh the client's confidentiality interest. Refusing the waiver here would be abusive, and the waiver was limited to what was necessary for the lawyer's defense.