Given that CRM in the aviation world stands for CREW resource management.
It boggles the mind to know that simple fact escapes the slaves to physo-babble.
I'm inclined toward the physo-babble definition of threat and error management.
It is simply dressing things up in a trendy new set of words. Works really well in the consultancy world (an area I directly work in) as it looks new and relevant.
The alphabet soup of acronyms that just keeps expanding in aviation is nothing more than empire building for those who like to make flyig more complex than it really is.