just had a USSF clinic...

[representing]

...and the National USSF instructor said something interesting that I never thought of or heard before. Wanted to see what others would do in this situation:

Say a player is obviously dissenting while walking towards you to argue with a call, questioning you in an unsporting manner, whatever... you put your hands up and start walking backwards as if to say "I've heard enough, back off!". If the player continues to walk towards you, the instructor said "I would just walk off the field since players aren't allowed to leave the field without permission". I missed what he said after that, but I could have sworn I heard him say something like "twice" or "double", as if he was hinting to caution the player twice. Once for dissent or unsporting behavior (Unsportsmanlike Conduct in NFHS) and then the second for leaving the field without permission. You wouldn't be wrong to do that technically to the FIFA Laws of the Game or NFHS Rules Book. But trying to explain that to the player or coach could be a losing battle.

Just curious what other referees would say, either USSF or NFHS. Me personally, I wouldn't walk back more than a few steps once I get my hands up unless I need to for my own protection. If they come any closer, the yellow would be out of my pocket immediately.

Your thoughts?