Hello all...I know I am not the "father" or "mother" and I will try to not write too long but I have to vent about this as my mom is trying to figure out what to do and he asked me to come on here to post after I suggested it to her...

Quick background:

1) Parents divorced: Jan. 2005 (two siblings, I am 25, an he is 15)
2) Father's side of the family has neurological disorders (OCD and OCPD rampant in the family...I have OCD for example but thank god I got the loving side from my mom still)
3) My brother lives with my mom and is "supposed" to spend time with my dad but he hasn't much as I will explain below.

Ok....my brother...he used to be so loving and caring and in the last couple of years he started to form (as what I see) two personalities. It used to be at first mostly his loving side was out (65-70% of the time)....then it became worse and worse over the years (became 50-50) but in the last few months he is "growing up" it seems to be 99% of the time...

Now, he has become the most vindictive and evil thing around. He can say "I hate you" and truly means it....I mean I know that when we were all young we said things we did not mean but the difference is I would say "i'm sorry" 10 minutes later and never stayed vindictive. He also doesn't know how to be smart and vindictive. He literally doesn't think 5-minutes ahead or planning to try to get things in advance....my mom has done so much for him and makes the best food etc and takes care of him with his tutor...guitar.....and anything else that he may seems to "want" but he goes on to say "how disgusting" the food is or tries to manipulate her (doesn't really work) by saying "you don't care about me" or "you haven't done anything for me" but then 5-minutes later he will say "i'm sorry" because he wanted to go out and buy a t-shirt....all he thinks about is himself and what may benefit him (it seems compulsively rather than planning for the future) and he thinks everything in the world revolves around him and that he is higher and more "high class" than everyone but the only friends he seems to have are his "XBOX Live Friends" or "World of Warcraft friends".....it is ridiculous.

Now his thing is going to this one school which would take my mom 30-minutes to drive everyday 1-way (so over an hour of commute total each day) and he seems to not be giving up. My mother is 50-years old and he is 15 and he has been stressing the hell out of her the last month and she seems to not know what to do. To make things worse, my father who really hasn't been there because he thinks that everything that has happened that he is the victim (he has a major headcase of OCPD and of course in denia), and even though he hasn't paid child support or anything like that....my dad slowly by ignoring him (and my brother wasn't close to him much) I did feel he started to slowly change but now that my brother thinks he can get a car out of him he is kissing his but and even being vindictive saying "he doesn't eat good fruits" when all my mother does is try to get him to eat it to make my dad "feel sorry" for him and has made him worse than ever....

This scares the hell out of me because people with this type of personality trait often have miserable lives or do violent acts (even though he hasn't shown any massive signs of violence yet) but this is scary how he is and his mentality is and how my father because of his sickness is feeding into this ego of his..

Anyways...my question and critical point is that he won't give up to death about going to this other school and it has been driving my mom crazy and full of stress. He first told me (before I stopped talking to him because how evil and vindictive he was) that he wanted to go to this other school because of this girl...I told him about the rule of scarcity and that based on my experience if he tries to force something and go just because of her he will end up having a higher chance of getting rejected (my brother has not had a gf yet) and it will not make him happy regardless...he then says because most of his friends go to this other school....and that he is so much "higher and low-class" than everyone else at his school...

To make matters worse....my dad is playing games w/him and my brother is feeding his ego and my dad just is sometimes a vindictive person too...and my mom asked some of her friends and they thought "to give in" to him b.c. of his school and her lawyer said "maybe give him a deadline and say after xmas she might let him" but I told her that what I feel is for him not to grow up thinking he can simply get everything and be "king of the world" and that if she lets him go there it will feed even more to his ego and make it worse for his life....

So....what y'all think? Again...sorry for the extremely long message but I wanted to explain in a bit of detail exactly what some of the situation is that is going on...thx again!