Nitpicker - Doesn't CX trust the CC to operate a door - and 'cracking' a door to check the girt bar from the outside is the dumbest thing I have heard of. Have seen this activate a slide with disastrous consequences.
If the CC can't operate a door, they shouldn't be out in public.........
As Bloggs says, this procedure won't work on a 717.
Dizzy Lizzy - no change required to procedure, just staff required to obey current policy.....