Uncommanded or unintentional? Like it went of on its own, or after the pilots fiddled with the switches and inadvertently caused their own misfortune - like we often see on float tests?
Haven't heard of any accident as a result, not even a PAN call, so assume they just flew it home and asked for a re-pack? Seems to confirm the Agusta position that the world will not end if they inflate in flight.