Thankyou so much for all your input. I'm sorry to hear others have had this problem but your advice sure helps.
Unfortunately, this flare up of acny was the beginning to a full blown flare. He is back to square one... throat ulcers, bloody diahrrea, joint pains, fatigue, lost 10 pounds weight... all in a week.
I don't think the Asacol 800's are holding his UC in check. He is seeing his specialist today. Hopefully they will hospitalize him again to get him stablized, then try something different.
I'll know more later today. Again, thanks to all of you.