Question juridique clé
Whether the federal appeal against the cantonal remand decision is admissible
Solution extraite
The remand decision is an incidental decision; the appellants showed neither irreparable harm nor the conditions for immediate final review.
Motifs extraits
The cantonal court left the commune discretion to either adopt the plan or suspend the procedure; the appellants could challenge any suspension decision, and mere prolongation of proceedings is not irreparable harm.