As the mom of a 13 year old son with Autism I know exactly where you are coming from and at. My son is now taller and stronger than I am and when he gets angry I find myself wondering how much longer I will be able to "deal" with his outbursts. Some tactics I've learned I've seen progress with over the years. My current issues I am having with him is due to his anger and violent outbursts (minimal right now TG) due to H leaving and the raging hormones and body changes of puberty. (my H says I'm imagining the reaction to his leaving and that S13 will be fine with it...)
I barely have any funding for my son as well as the old school of thought was if he was older than 6, it was useless. Therefore a lot of the newly established programs are geared to under 6 year olds. I have had to do a lot of the research and implementation by myself through trial and error.
If you want to contact me by email through the alt, perhaps we can connect and I can share what I've learned, what works for me, etc. You'd need to be specific to me about what exactly they've said about his issues, etc so I can target the info to them.
Have you tried social stories with him? The ABC method of behaviour troubleshooting? What do you feel his developmental age is? Is he verbal or non? Where on the spectrum do YOU feel he falls? I say "you" because what the docs see is often only a brief snapshot and kids like ours are so multi-faceted, it's difficult to get a handle on it.
I'm here for you even if all you need is someone to listen who has been there and still is...
~ This Diamond now SHINES!! ;-p ~
My Sitch in MLC - http://www.divorcebusting.com/forums/ubbthreads.php?ubb=showflat&Main=45253&Number=1901148#