I saw there is a technical service bulletin on Horizon Hobby for the AR7100 regarding antenna detaching on the receiver board. This could be similar i suppose.
http://www.horizonhobby.com/Products...odID=SPMAR7100
My AR7000 is already with HH for repairs. i experienced glitching in the air but was able to land safely with the glitching going on. In my case the LED on the receiver was flickering randomly. This was on an electric model with no vibrations going into the airframe. Lets see what HH says.