You got banned for abuse, not for ramming. He flung you cause he thought you rammed him. Maybe he should have given you the corner, maybe you should have given more space. Either way, you can't flame like this.
Personally, I wouldn't ban you for this, but "asshole" and "fuck your mother" is a terrible attitude, and you are lucky, cause some other admins would have banned you for longer.
Nothing else to discuss, see you in a day and a half.