Wow - I'm grateful for the responses and information that has come through since I last checked this out. The appointment yesterday went incredibly well. This specific doctor has been working with the kid over the past 5 years and is pretty familiar with the situation; however, previous attempts for specific therapies and programs have never panned out. The mother got a chance to have a one on one conversation with the doctor before the actual appointment. That was crucial because they got to discuss some things that may have made the brother uncomfortable (also, we prepped her to ask some questions based on points made by those who contributed here - THANK YOU!!!). When they all sat down, the doctor explained how incredible this opportunity is for him and his future. They focused on the positives of the program, mainly activities & the chance to farm (which he loves), but also told him that we would all be here for him once he returned - regardless of how his experience went. He trusts this doctor and I do believe he realizes that this his last chance to get real help before turning 18.
The hardest part through this has been getting him on board to go. There was a breakthrough during that appointment in which he admitted that he needed a change. For the first time, he actually embraced this (which led his mom to tears of joy/relief).
As for the actual trip down to Utah, I gotta tip my cap to the kid - he came up with his own plan. He told the doctor and his mother that if he was going to go, he wants his mom, dad, and sister to take him. He said it was important to him that they spend that time together as a family before he leaves and takes this on. The parents have been divorced for a while, and the father been a real pain when it comes to helping with his son.
Although we know there's that constant possibility of him "blowing up" (which now makes me laugh every time I say that because of that hyperlink lol), everyone is taking comfort in his current perspective on the trip. They are all embracing it as an opportunity to catch up on lost time and to stand together as one family to support him - this kind of solidarity has been absent for years.
They are leaving within the next 10 days. If he "blows up", they have his prescribed medication to calm him down. The doctor suggested using what they normally use when he is at home because he is comfortable with it (and it works). But fingers crossed, that won't be necessary.
So, what began as an idea to knock him up on medication and get him down there as fast as possible, regardless of his desire, has turned into a much-needed family vacation and hopefully a new beginning in his life. He is a very smart kid and I think he realizes how important this is to his development for life in the real world. I'm not sure we would be in this place now if it wasn't for some of the feedback I got on this site. Thanks again. I look forward to posting about a successful trip in the next few weeks.