title: How do I remove instance methods at runtime in Objective-C 2.0?
body: <p>Is it possible to remove methods added to a class with class_addMethod?</p>
  
  <p>Or if I want to do this, must I keep creating classes at runtime with objc_allocateClassPair  and adding different sets of methods to them to vary the methods implemented?</p>
  
  <p>I'll accept answers that include hackery :-)</p>