Can't delete 'ghost' apps off iPhone?

I synced my phone to my iMac computer, and there's multiple devices synced to this computer, so there's over 600 apps. I didn't realize they would all be downloaded onto my iPhone, since this had never happened before, but they did. I tried manually deleting them, and it worked for a short while, but all the apps came back after I used my phone again. This time however, the apps looked the way they do while they're downloading (darker than usual), and I couldn't open any of them. I held down the 'ghost' apps, and when I pressed the 'x' sign, nothing happened. The apps are still there, and even when I try to delete other apps, they show up again. A while before I synced my phone and all this happened, I had a similar problem with apps I tried to delete. They would delete, but the icon of the app would stay there in the same way they are now.

This is getting very frustrating, as I have about 300 apps on my phone that I can't delete, and I don't have much space left. I would greatly appreciate any help.

Sometimes I that happens when I try to delete an app of my iPhone or iPod. Have your tried going into usage in your settings and deleting from there? Works for me.