We'll respond shortly.
Sometimes it is necessary to reload or replace a stub/test class during testing (apparently rspec is particularly susceptible to this). This can be achieved using Object.send(:remove_const, :Foo) where Foo is the camel-cased name of the class. If your class is defined within a module, it may be necessary to use Module.send(:remove_const, :Foo)
As a point of curiosity, does anybody know when has_many relationship reloading moved from (or to?) foo.bar(true) to foo.bar.reload? The reload syntax seems preferable for readability; will foo.bar(true) continue to work in the future?