Snubber on the line or just the inductor
This is what I found in the document that relates to your question: -


  To minimize the antenna-like radiation of this electromagnetic energy
  from wires connected to the inductor, the flyback diode should be
  connected as physically close to the inductor as practicable. This
  approach also minimizes those parts of the circuit that are subject to
  an unwanted high-voltage.


And that is perfectly true (see page 6 of the first document).

On page 12 it says this: -


  The recommended and most effective position for the diode is at the
  inductive load itself, if this is not possible the diode will still
  help suppress the voltage spike even if placed at the HID NAS product
  connector.


I do not see a contradiction here.