If the pinch bolt is stuck, dont spend hours trying to get it out, just rip the entire leg off the car (crack off the bottom balljoints, Driveshaft, and unplug the ABS then just remove the entire top mounting plate and pull the lot out)
That way you can get the thing in a vice or on the floor and beat at it properly. We must have wasted a good hour on ours, and then ended up removing it and having to drill the fecker out.
Also, read the haynes manual on refitting the top mounts, they need to be aligned correctly, once the spring etc is fitted theres no chance of turning the parts to line the top mount and bottom fork up, i didnt have my haynes when i did mine, and ended up having to do it by eye and put it on and off the car a number of times to get it right.