I don't know what they did, but honestly I liked it a lot better pre-patch. I am having it resist a lot more now overall, rather it be 1 mob or 25.  I also had it get resisted 15 times in a row inside Khal last night.  Now, keep in mind, I was not in combat, nor was not attacking anything, just sitting in the Bank in Khal fd'n.  From what testing I've done, it is harder to split now than before, as the mobs may not go back instantly, but they just sit there for 5-10min, all of them, including the one I wanted to split.  I had a mob inside Gorgaluk (horrible dungeon btw), stay ontop of me for 45min yesterday before I finally just /quit out.  (I went to eat dinner), and I was not still in combat, out of combat just standing ontop of my body.

Well the idea is when it's fixed that all of the mobs will go back anywhere from almost instantly to maybe a 30 seconds or so at random intervals.  They just haven't fixed the corpse camping bug yet.

You can fd split nicely now, all they need to do is adjust the timers for the mobs to pace back to their spot.