Rudder.. though mishandling that may (a/c dependent) tend to pitch one into rotation, as much as aileron missuse may on others. Also, in my experience, once fully stalled, it can be remarkably difficult to enter the spin, even when you're trying!
As for breaking the stall, I'm firmly of the stick and more stick principle. Primacy perhaps as I learned on gliders, but the 'minimum height loss' - pitch level and apply power technique really irks me. Fly the wing; it can be stalled or unstalled at any attitude. That said, there is no need to be violent, just positive.