You told him that you didnt want trouble, and you had asked him to leave you alone , fact ,He threw the drink and glass in your face ?? that would make any man re-act , you tried to subdue him thinking a man with a violent past was going to attack you as you felt he was reaching out for another weapon , Further to public opinion the police have to chase up these, they know what constitutes someone getting there just deserts....I hope it goes ok , sounds like self defence to me