just needed to fix that one link not to use class_name.
Watch http://test.dwagn.org/wagn/changing_type_name (a cardtype that was originally named "the more things change"). Now go to http://test.dwagn.org/wagn/the_more_things_change and notice that the footer says "watching TypeNameThatChanges cards" (and the link broken).
I wouldn't swear that we're using the right name everywhere, but this particular case appears to be fixed.