I'm not sure the difference between "separate" "dislocate" and "subluxate" but I have done the latter two quite often. Then had surgery, then dislocated some more. I now wear a brace like this when I ski: http://www.betterbraces.com/Photos/ShoulderStabilizer.jpg
If you've only done it once, I'd recommend getting some kind of brace (there's a wide variation in braces) atleast for this year. you want those muscles to tighten back up or they'll never go back to normal.
re-injuring yourself too soon after is serious. I'm thankful last year i seperated my shoulder at the end of the season and it's still weak.
My thumbs are a total mess from falling on them again and again. I get searing pain in them everytime i tweak them, and my hip clicks everytime i walk. SHit sucks
Did i mention i'm a good skier?