DW, your view depends on how you define ‘handling’; is this the physical flying skills or the more wider management skills, where awareness (mental activity) should precede action.
Re CRM, which part, which aspect? There may be a consistent understanding of what CRM is for – definitions can be quoted, but as to what CRM involves in application, then there is a vast range of views, personal, operational, cultural, national, etc.
How might CRM help to diagnose or rectify a problem; please don’t quote ‘the use of all resources …’ as this is meaningless without defining which resources can be of value in a particular situation, which requires understanding the situation, etc, etc.