My MCX used to fly great, until today. I'm having a strange problem.

First, sometimes it can't get enough throttle to lift off. I unplug it, plug it back in, it lifts off, and flies fine for a few seconds, then it starts to spin whenever I raise the throttle fast, and then if I keep flying, it starts to lose power again. Both motors get real hot, whereas before I could barely feel them getting warm. Also, the gyro is acting like a heading hold gyro...if I turn the MCX with my hands with the battery plugged in and the throttle down to zero, the motors spin a bit, as though trying to compensate.

Is my 5 in 1 dying?