Shoulder dislocations are very common ailments. Therefore, I have elected to post an entry in the general column as well under Surf Report, Health Hazards, Dr. Budman's Medical Surf Clinic. Just quickly as to your situation. Generally, immobilizing the joint for a few weeks and isometrics when you are pain free is a good start. Then you are obliged to do physical rehabilitation.
Dislocations can recur.
That depends on several factors as to how extensive the original injury was to how succesful the rehab. The key to recovery for most shoulder injuries is physical rehabilitation to get the muscles back to preinjury strength or better. Ask your orthopedist for a referral to a physical therapist who concentrates on exercise training.