Key legal question
Whether the cantonal remand decision was an admissible appealable interim decision and whether the complaint could be heard for the challenge to the court's composition.
Extracted holding
The remand decision was a separately appealable interim decision; the complaint was admissible insofar as it alleged unconstitutional court composition.
Extracted reasoning
A remand that does not merely implement binding instructions is an interim decision under Arts. 92 and 93 BGG. Objections to judicial composition must be raised early and may be reviewed immediately.