I have a record type on one of the objects. When I try to delete it, there is an error messages which says that i cannot delete it since it is set as the default on 2 profiles 'Chatter Free User Profile' and Chatter Moderator User Profile. When I navigate to either of these profiles, there is no way to set the 'Record Type' to default to '--Master--' and hence I am unable to delete the record type.

Appreciate if someone can suggest some workaround. Thanks