Heya! I saw your blogpost on your haunted doors because I wanted to see if others had the same issue! I have a 3 week old Model S and had my door open on me while driving, and I have some "sluggish" opening on the same door. I never noticed because that's the passenger door, but I was wondering if you still had the issue or if yours was eventually fixed 
I emailed my service center so we'll see what happens!
I emailed my service center so we'll see what happens!