Hey, Loolagigi. If this plant is taking up space that could be used by other plants, than yes, you should pull it. However, if you have the time/space to nurse it back, than I'd start pulling dead leaves now.
After you've got it stripped of the dead leaves, you can better see what you're dealing with. This will make it easier for you to start propping the branches up. Get some prop sticks from your local garden store(or whatever you want to use to prop them up) You've got to start training those branches back twords the light.
When you've got your plant standing straight up again... FLUSH IT!!!! Then, FLUSH IT AGAIN!!! I think you were giving alot of nutes, and not enough light to use them.
After your plant starts it's way back to healthy growth, go buy you a $10.00 Illuminated Microscope from Radio Shack. If they dont have one on hand, order it here...
http://www.radioshack.com/product/index.jsp?productId=2179604 ...This scope will help you see when your trichomes are at that milky or golden goodness. If the trichs are golden, take that branch now. The ones that are a light milky color, you can let them go a little longer to try and get some more mass.
Hope this helps ya' out, man! Good luck with that girl!