Don't do it...it is not worth it!!
Answered you own question!! It is also in your local air law and usually a good ops manual.
Get out of the helicopter and leave it on its own at your own peril! Been there, done that, got the T-shirt...the thing left without me.
Never drop passengers any where you can’t shut down if doors and seat belts are a potential concern, as at least once in a career you will get caught out. Do it every day and your really pushing your luck...and you wouldn’t work for me / my organisation, you are too big a risk. I am older and wiser now! Please learn from my mistake and the mistakes of people like me.
P.S. Remember the Dauphin fatality at Penang a few years back? I believe that was another example of just how wrong it can go.