Roommate with positive test...?

Back in November, a smelly, coughing old friend that lost his job & apartment came to crash on our couch for a couple of weeks. My fiance and I were only around for a few days of that, as we left on vacation. (We also have one roommate - fiance's best friend.) We returned to find that the crasher was in the hospital with active tb. (And still in hospital now, 4 months later). Fiance and I got tested right away. Negative.

Roommate kept putting off getting tested. My negative test made me feel better, but he was sick and coughing his head off. He said he wanted to wait until he was better to get both the test and a full physical. I have a feeling he was just scared, but feel that it is so unfair to put others at risk like that. Anyway, I thought about moving out until he got tested, but felt like an ass and finally let it go, just reminding him once in a while that he needs the test. He got better but still coughed, but then he was also smoking. Anyway, last week I finally drug him to the doctor. Positive test. We were at some crappy community health center and he says the nurse told him that he's not contagious but needs to take Antibiotics for 9 months.

My problem: My wedding is in 12 days. He is the best man. He was told that he can't drink while on the Antibiotics so is planning to wait to start them after the wedding. He will dance with my grandmother. He will hold my infant nephew. CAN THEY REALLY TELL THAT HE ISN'T CARRYING THE ACTIVE DISEASE FROM THE SKIN TEST? It will hurt his feelings so bad if I express my concern, but I CANNOT put my family at risk like that. He was asked to get a chest x-ray, but I have the feeling he'll put that off as well!

Help! What do I do? Am I worrying for nothing or SHOULD I be worried?

Thanks for any advice or info.

p.s. Fiance and I are repeating our skin tests today.