Unfortunately this was a very bad idea for me. I have Mercury Browser installed, so instead of asking me if I wanted to complete with Google or Mercury, it simply loaded Mercury with no way out. I had to turn Google back on. However, turning Google off and back on again seems to have cleared the problem... At least temporarily.
Has anyone tried a different launcher like "dodol", "Cheetah" or "Hola"? I am curious if this happens with them or just "TouchWiz"
I just turned it off in the application list and it worked fine. No issues here. I use Nova Launcher.