What exactly is happening? the fact that you say "some type of spring" makes me think the pedal is going to the floor and not coming back.. if that is the case then you most likely have snapped your clutch fork pivot.
As far as taking the gearbox out, you'll need ramps/stands, a couple of jacks, some reeaaally long extensions and someone to help you. If you have access to a hoist and a gearbox jackstand, it will make life a LOT easier.
Someone else with more time can write up what needs done.