Without igniting the brand wars, suggestions to trouble shoot my problem.

Today while flying a practice for a upcoming airshow I suffered a lockout. The controls went hard over just long enough to trip the ECU shutdown on my RTI and force me to land deadstick I am using a DX7 with AR9000 rx and remote. I do not think the issue was brownout as I do not recall the light flashing. The controls going over tends to make me believe that it is not wire, battery or switch to the RX. I have almost 70 flights on my setup.

Help