I hate to sound like that stereotypical suck-up-to-admin person, but you need proof.

If you want something changed you have to take pictures, record a video, whatever you have to do to prove what you are claiming.
Then, be the bigger person in the situation, don't try to persuade him into saying bad things, just keep quiet and let the Admin continue what he is doing wrong. If you provoke the Admin or start cursing at him or anything, he has every right to do whatever he has to do. Face it, we all know if we were an Admin, and we were in an arguement, we would be fumed and we would want to Jail the kid. This is what happens, if the Admin is confronted on what he is doing wrong, and he knows he is wrong, he is going to try to find a reason to punish you. So don't say a word and keep it quiet.
Next, all you have to do is submit a ticket, explain the story with sensory details and one of the higher admins will take part in what they think is right. If the outcome is not what you wanted, then leave it alone.

Just for real man, take this out on the Admin, the community already knows who is good and bad. Snake will change it if he has evidence. All you gotta do to get change is up there.