Your going to need to remove the two bolts holding the release fork to the trust bearing on the clutch pack. You said they turned alittle.Did you bend the lock tab open? Don't heat the fork just heat the bolt head. This will swell the head and they will remove easily. Now get a solid bar puller setup a screw type will work if you put tension on it add some heat then whack the screw with a sledge hammer it should pop. A hydraulic OTC would work much better. Maybe borrow one. your angle irons are not getting it.

Its sounds like the "throwout" bearing on your other clutch maybe shot.
But it could be that the clutch disks are worn out? Either way, this side will teach you all that is needed to know for when you tackle the other side.
I popped my clutch pack loose and let it flop out as far as those 2 bolts on the fork would let it. That way there is lots of space to get an unmodified wrench in on those bolts. The locking tabs that are on them were the pain for me.