My question involves criminal law for the state of: Maryland
Please help me, My father, girlfriend and I were at a concert. After the concert we were walking back to the truck to go home. My dad and I obviously had been drinking, we starting wrestling getting rough with each other but it was all fun and games the whole time. We continued at the truck for a little bit and then we tripped over each other and i fell on top of him, next thing i know I'm being thrown to the ground by about 15 Howard County cops stating that they saw me punching my father and i sat on him and continued to punch him. My dad tried explaining that was not it and it was all false and we were just playing around the whole time. My girlfriend also tried telling them too. The officers didn't want to hear it, they hauled me off and pressed charges on me for 2nd degree assault listing my father as the victim. I am on probation for a dui, so i CAN NOT be found guilty. My dad asked me to subpeona him to testify that the police report is completely false and it was all a misunderstanding.
Is that enough information to get the charges dropped? (my father aka the "victim") stating that. Also will he get a phone call before my trial date from the da to question him to see if there was enough evidence? based on the above, what does everyone think will happen? I am not getting an attorney because i am honestly innocent, i don't have enough money for an attorney but i apparently make too much to hire a public defender.
Please help!

