Hi and welcome fair skies . Not sure if you still post or read here but I just read your post. I find it truly heartbreaking. Here's my personal opinion on the situation.
Boys deeply crave their fathers and your son has been rejected therefore he is acting out. This along with hormones makes for tough teen years. I think this is partly why he sabatoges friendships, fear of being rejected so he rejects first.
As to whether or not someone can put a spell on somebody; well, I just believe words have the power of life or death. A parent can definetely have a huge impact or how a child feels about him/herself. If you constantly boost your child and encourage them, they will do better and of course the opposite is also true.
I hope and pray that this situation changes for you fair skies. Sounds like you're an awesome mom looking out for your sons best interest. I pray the courts see the same.