In regards to the stuck clutch, have you verified the clutch arm is moving through the full range (a bit over an inch) to disengage the pressure plate? Are you sure it is stuck and not a mechanical failure? Failures can be: broken bolt at the throw out bearing assembly inside the bell housing (rare), a spring arm or other part of the pressure plate breaking or a piece of the friction material coming off the plate getting jammed inside between the pressure plate or the flywheel. All of theses are pretty rare but they do happen.
A method for unsticking the clutch plate from the flywheel is to point the car down the driveway (assuming you have some distance) jack up the rear of the car and with the car in 1st, hold the clutch pedal down, rev the car to 3k and have an assistant abruptly drop the back of the car onto the pavement (with the clutch pedal down).
It might take two tries, in my experience it usually works on the first try. Then drive the car a bit, slipping the clutch a little to clean the two steel surfaces.