File something with the court. As a pro se litigant I doubt the court will make an issue of your failing to follow all the procedural niceties. Just explain what's going on and that he no longer represents you.
It really depends on which job you want. Go to
and you can see which jobs you're disqualified from by doing a keyword search for "law enforcement" in the florida database.
Acquittal on the criminal case just meant that the jury wasn't sure beyond a reasonable doubt that he was responsible for the killing. The standard is lower for civil trials- just "preponderance of the evidence," greater than 50%.
Well, there are always the cases. If you are wondering how cops are trained,there probably are resources out there. If you are talking about suing a cop for instituting prosecution w/out probable cause, you have a hard time because in addition to the fluidity of probable cause, cops are protected by qualified immunity, meaning basically that there had to be a case with identical facts that resulted in a court finding no probable cause.