First off, take that 4.8 battery and put it back in the tool box. Please use a 6 volt battery with a Spektrum rx.

Secondly, when you checked the battery after the crash, did you use a meter that could put a load on the battery? If you don't have one, it would serve you well to get one. When a battery is checked in an unloaded state, you may get what you think is a good reading but once a load is applied, the voltage shows a drop and you may go below 3.2 which is what the threshold is. That will cause a "brown out" and once that occurs, the voltage will go back up since there isn't anything drawing from it. Voltage goes up......servos work.......but then voltage goes back down when you move the sticks! Never ending cycle until the ground gets in the way.

The blinking light on the rx indicates power was "interupted" for some amount of time and it really doesn't indicate a bind issue. If the light was blinking, then yes, it would be an indication that you had a power drop and it could have been the reason you lost control for some amount of time.

There are a number of different battery types out there and I'm not saying you need to change to another type, but I would certainly recommend upping the voltage to a 6 volt pack if your going to stay with Nimh.

Hope that I've helped some. If not, you wouldn't be the first to tell me so.......my wife would!