Key legal question
Whether the cantonal court validly warned the insured about a possible reformatio in peius under Art. 61 lit. d ATSG.
Extracted holding
The warning was insufficient because the court did not clearly express its own preliminary view that a worse outcome was being considered.
Extracted reasoning
A mere reference to the insurer's request and a summons to comment or withdraw the appeal is not enough; the court itself must indicate, even only summarily and without prejudging the merits, that it is contemplating a deterioration of the appellant's position.