I think you should definitely try to recover costs, but I don't think you should have very high hopes of succeeding. This whole thing is a bit force majeure, and that gives the airlines some extra wiggle room. I am sure SAS will do what they can, but you are unfortunately just one of thousands, maybe hundreds of thousands, who are in this situation. Sure, it sucks and it is definitely not your fault. Just be happy that you can get back home at all, and see any compensation above a flat refund as a windfall... Wish I had more helpful advice.