Yes, I have taken my airflow ring off and love the airflow it gives. Just don't loose the clip if you ever want to put it back on.The Atlantis is made the same was the Nautilus is made. The bottom cap just snaps on to hold the air flow ring in place and make the obvious electrical connections. All you should have to do is remove the drip tip and place the atty upside down on an atty stand and lightly tap aroind the 510 until the cap is seated evenly all the way round.
There are a lot of people that have taken the airflow ring off of the Nautilus so you should be able to find a YouTube video on the subject.