No Manx are still going (actually they are now Manx2, I think they had their own problems a while back!). Manx are rescuing passengers with tickets on the Belfast route.
Euromanx seemed an odd setup - their routes shadowed services run by established airlines which was never going to be an easy way to start a business! One of the reasons given for closing down is the lack of passengers, maybe they should have put more thought into the routes.
Don't know who owned them, saw one of their planes at Manchester last month and it was registered in Austria (possibly just the home base of a leasing company).