Corluka didn't play, Kaboul played as rightback, he's been playing there for quite a few games there. I think Corluka is injured, though i am not sure.
I watched bits and pieces of the game, so i don't know how Modric did, but let me tell you this, the reason Tottenham came back from being sixth to getting fourth place, a large part of this are the trio of Modric, Bale and King. Modric in particular has been an absolute beast for them. My god what a player, i'm a big fan of his.