When is the flight and are you EBG or EBD? Then you can call the hotline and get a ticket and guaranteed seat for that flight if it is more than 48 hours (24hours for EBD) out. Anyway, you will need to be prepared for a rather steep fare - full J. It saved my plans a couple of times already and works very reliable.

Otherwise I think a TA or the SAS hotline can put you on a Waitlist out I woulnd't be too optimistic it clears.