I know what he is trying trying to do but, just record the interaction and say "I don't answer questions" "Am I under arrest am I free to go?" Until they let you go. If they try and pull something say "Officer that statement is patently false and an outright lie, are you now trying to fabricate probable cause and false allegations against me?" Is it worth all this bullshit. Do we need another example of how the cops are criminals? Our time is important.