Kernrechtsfrage
Whether the defendant's right to be heard was violated because he was not served the prosecution's written submission of 7 September 2010 and could not reply.
Extrahierter Entscheid
Yes. Every submission filed with the court must be communicated so the party can comment on it; the omission required annulment regardless of whether the submission added new material.
Extrahierte Begründung
The right to be heard under Art. 29(2) BV includes the right to know and respond to every court submission, even if it contains no new facts or arguments. The file did not show service of the prosecution's statement, and the court did not dispute the omission.