Soots,
I don't think it's too early to do jokes about the quake; and even by your own admission this isn't particularly about Haiti.
I just think the sketch is too busy. You've got The Red Cross, Angelina Jolie, Barack Obama, Michael Jackson, Martin Luther King, Gary Coleman and Gordon Brown thrown in with the earthquake victims. It's too much.
Boil it down to the basics, and you may have something decent. But you might also just be left with a pun about AIDS. And now Angelina and Brad have filed for divorce it might not be as topical. Maybe she ordered them but has to send them back because of the divorce?
As I said before I'm not keen on jokes about natural catastrophes where so many lives are lost, but I'm a bit weird like that.