I guess I will give it a shot. I got nothing to loose but time.

You mean to reverse it on the transmitter right?

Well, I tried to reverse the throttle on the radio and I just got the same thing in reverse. I tried to adjust things from there but I got the same result.

I put it back in the "norm" mode.

Did you try my suggestion? Flipping diffs and reversing throttle wont make a blind bit of difference in my eyes- all it will achieve is losing the brake function when going from forward to reverse, as was previously stated. Try another radio (less hi-tech), and if that doesnt fix it, then it must be an esc problem.