Sport Cub S Connection Issues Not Covered By Manual

[Quench9004]

I have owned a Sport Cub S for about 2 years now, but it has not seen a lot of flying. I went to open it to fix a prop shaft that I had bent, and in opening it, I discovered a thin, red cable that only had one connection point. Is this the antenna for controller binding? Also, whenever I try to connect a battery, the LED flashes blue-red once, and then only red without binding, and the motor immediately runs at full speed with no way of controlling it. The only thing I did to the electronics was unplugging the black and white cables that connect the motor to the main circuit board. Does anyone know what is causing this issue?
pictures of the insides picture of the engine