houston is notorious for cops with shitty attitudes and bad evidence handling. i'm willing to be they broke some kind of law/regulation, espeically the slamming thing. were you two resisting at all? cuz of not let your lawyer know how they handled the situation and that you weren't resisting, if he can prove the cops were being overly abusive/forceful then you'll probably get the charges dropped. and i doubt much will happen for pi, i got a possession charge and got a 1000 dollar fine, got my liscense suspended for 6 months, spent 1 night in jail. and have to take some bullshit drug awarness program. i doubt you'll even get that much, and i know for a fact you can't have you liscense taken away for a PI charge. might get the 1000 dollar fine tho, but i payed mine in four payments of about 250 (have to add in court costs.)