Reset your throttle channel to what ist was. To change motor direction you simply need to swap two of the three motor wires to make it spin the other way.
Once you do that and it is spinning in the proper direction be sure to do a throttle calibration. REMOVE THE FAN BLADES. Turn on your radio then put the throttle stick to full. Plug the flight pack in and there will be some tones played. when you hear the tones slide throttle all the way down and the esc should reboot and be calibrated.