I actually got my car jack out last night and tried to jack the thing out of the ground with no luck. It actualy just started bending the angle of the ladder so that the bottom of the ladder now no longer touches the edge of the pool, however the one side still hasn't budged. I've tried wedging a screwdrive with a hammer to take the pressure of the tube with no luck. I also have kicked it I hard as I can so I doubt I will be able to generate enough force with a rubber mallet from underneath to do anything especially if I couldn't budge it with a car jack. Any more ideas would be appreciated.

Thanks