The ENT's comment about PCS symptoms taking 3 years to heal is not substantiated. Yes, some do take three years but some take six months. The time to heal is variable.
Here is a primer on some ear issues.
http://www.nidcd.nih.gov/health/bala...disorders.html
http://www.npr.org/templates/story/s...ryId=103463398
There are two therapies you may look into. Vestibular therapy and the Epley maneuver for labyrinthitis.
My wife has labyrinthitis and is scheduled to be treated by a Physical Therapist who worked with Dr Epley on developing his protocol.
Hope this helps.
Tell the errant golfer he should only play golf with a ForeSome. LOL
The demented humor of a damaged mind.
My best to you.