I totally feel your son's pain. I was diagnosed a year ago when I was 25. I was in the prime of my life. I had an AWESOME job (still have it), a beutiful and amazing girlfriend, a ton of friends, a nice place to live, etc... it was almost to good to be true. When I was diagnosed most of the things in my social life slowly but surely began to go away. It's extremely hard for someone in their 20's to have their life stripped away from them with nothing to do about
it. It makes you depressed, sad, angry, etc... I'm not the best person to take advice from because right now, I'm most likely in the same shoes as your son. I've been flaring since I've been dignosed and have the worst depression know to man, I actually was just put on a an antidepressent.
Like your son, I have decided to go the Remicade route. I had a colonoscopy today just to verify how diseased my colon really is; and boy is it diseased. If I were your son, I wouldnt hesitate to go down the remicade path. I've heard GREAT things about it. I pray that it works for me and if your son goes on it that it works for him.
Good luck and good bless!