The Worldstone Event has always had a few areas where you'll crash with the wrong resolution.
I'm not sure if there's any other reasons why you'd drop there, that's the only one I've heard about.
You did what was right and brought a second character into the game just in case you dropped.
But your internet going out when all of that happened has nothing to do with any of this I believe.
I've dropped several times in the same way and I've never lost connection to the internet.
In this case I don't think you'd be given anything since it was something on your side that made you lose the frags.
Very unfortunate, you can wait for another reply if mine does not satisfy you or answer enough of your questions.