That Hull-Sunderland game changed the relegation battle completely. Had Hull won it and gone 5 points clear, Swansea would have been under severe pressure. As it was, they faced Everton in a far more comfortable frame of mind.
Next season should be fun, though. Sigurdsson will surely be gone, Llorente too. They're the only two players that have kept them up. Unless they invest heavily, they could be next season's Sunderland.